Psalms, Book One (Psalms 1-41, with Psalm 146 as its summary psalm) is the springtime book of the five-part Psalter, paralleling Passover and Unleavened Bread, Genesis, and the Song of Songs. Like spring, it lays the foundational principles a Christian needs before any harvest. Its themes include the life and ministry of Messiah as foreshadowed in David's experiences, trust in God, suffering and persecution, redemption and kingship, hope, and above all two kinds of people, the righteous and the wicked, on two paths with two ends. Like Genesis, it stresses God's sovereignty and the consequences of choosing well or badly. Psalms 1 and 2 have no superscriptions and share the words haga, derek, and ashre, marking them as twin introductions. Psalm 1 teaches that the blessed man, one against the many, delights in and meditates on God's torah, understood broadly as all of God's instruction and the lessons learned from it. He is like a transplanted, fruitful tree, while the wicked are chaff and their own way perishes. God knows and provides for the righteous way. Psalm 2 introduces trusting the Messiah. Jesus' Beatitudes echo the opening blessing.

Psalms 1 and 2 together form the two-part introduction to Book One, joined by the opening and closing "Blessed" and tied to the Red Sea deliverance, where God showed Himself sovereign over Pharaoh and his army. Psalm 1 sets two paths, the righteous who delight in and meditate on God's torah (instruction) and prosper like a transplanted tree with eternal life, and the ungodly who go their own way and perish like chaff. Psalm 2 turns attention from the instruction to the Person it points to: the Lord's Anointed (Messiah), the begotten Son, King, and Judge. The two psalms are really about the same Word, one as teaching and the other as relationship, so believers must know both the Book and the Son. Psalm 2 falls into four three-verse stanzas. Nations and kings plot in vain against God and His Anointed, longing to cast off what they see as bondage, though they are actually enslaved to sin. Their muttering comes to nothing, while God's word accomplishes what He pleases. God laughs in derision, then speaks in wrath and installs His King on Zion, the answer to human rebellion, fulfilled ultimately at Christ's return rather than in David or Solomon. The Father declares, "You are My Son," giving Him the nations. Finally the kings are urged to serve with fear, rejoice with trembling, and "kiss" (bar, meaning purely or sincerely) the Son, lest they perish. The lesson is that no one can defeat God, so trusting Him brings blessing whatever the circumstances. Psalm 146 serves as a summary of these themes.

Psalms, Book One (Psalms 1-41) belongs to the Hebrew five-part pattern that pairs the five books of Psalms with the seasons, the Pentateuch, and the Megilloth. It is the springtime book, aligned with Passover and Unleavened Bread, Genesis, and the Song of Songs, and it is summarized by Psalm 146. Its themes are the righteous versus the wicked, Torah, trust in God, and Messiah. The Messianic prophecies are read against David's life, with David as the type and Christ as the reality. The line runs from the Seed of Genesis 3:15 through Judah (Genesis 49:10, with Shiloh as the peace bringer) and the Davidic covenant of II Samuel 7, then through Isaiah and Jeremiah's Branch, to Jesus as Root and Offspring of David in Revelation 22. Psalm 8 speaks of the Son of Man made a little lower than the angels and later given dominion, as Hebrews 2 applies it. Psalm 16 is read as Christ's own trust, commitment, and hope of resurrection, as Peter does in Acts 2. Psalm 22 describes the crucifixion and then the worldwide results of His suffering. Psalm 40 presents Christ as the willing sacrifice who proclaimed righteousness, with the law written on His heart. Psalm 41 foretells Judas's betrayal and God's vindication of Him. Because these prophecies were fulfilled to the letter, believers are to serve Him without fear, in holiness and righteousness.

Book One of the Psalms opens with two governing themes: Torah, understood broadly as all of God's instruction (including New Testament teaching and lessons learned by living it out), and the Messiah, the anointed Son who is the perfect model of that instruction and with whom believers have a personal relationship. Together these are the Word in the Bible and the Word as Person, known through instruction and through relationship. Psalm 19 restates both near the midpoint, reversing the order: the heavens declare the Creator's power (Elohim, the Son as Creator), and then the law of Yahweh is presented as the loving instruction of a covenant Friend, ending in a plea for cleansing and a Redeemer (goel). Paul's Romans 1 shows that people suppress what creation plainly reveals. A third and most prominent theme follows as the logical outworking: trust in God. Psalm 3, written as David fled Absalom, turns mockery into confidence, since God still rules from His holy hill and salvation belongs to the Lord. Psalm 37, an acrostic instructional psalm, teaches that burning with anger and envy at the prosperous wicked only brings harm, and urges trusting God, doing good, and cultivating faithfulness. I Timothy 6 carries the same call to faithful waiting into the New Covenant.

Book One (Psalms 1-41) carries the theme of faith and trust in God, and Psalm 146, the first of the five closing psalms that summarize the five books, serves as its summary. Psalm 146:3 warns against trusting princes or any son of man, since human nature and experience give little reason for confidence, while verses 5-10 show why God alone is trustworthy. He is Creator and loves His creatures, keeps truth and covenant faith forever, cares for the oppressed and the poor, opens spiritually blind eyes and lifts those bowed down by sin, loves the righteous, watches over strangers, widows, and orphans, overturns the way of the wicked, and reigns forever. Many Book One psalms arise from David's life, especially his years fleeing Saul. In them he wrestles with fear and enemies but ends by declaring trust in God, who delivers him each time (Psalms 2, 10, 12, 17, 34, 35, 37). Psalm 23 is the best-known example, with Spring as its background, tied to Passover and Unleavened Bread. It is voiced by a sheep who boasts of the Good Shepherd's care: provision of Word and Spirit, rest, renewed life, guidance in righteousness, comfort through dark valleys, a prepared table amid enemies, and goodness and mercy pursuing him forever. These psalms are meant to build the same trust in believers.

Many psalms of Book One share the theme of faith and trust in God, because the circumstances of David's life, especially fleeing King Saul, forced him to learn through hard experience what God does for those who rely on Him. He recorded those lessons so that others could learn them the easy way, and the theme often emerges from the whole experience of a psalm rather than from explicit statements. Psalm 118:9 captures the essence: it is better to trust in the Lord than to put confidence in princes. The promise of I Corinthians 10:13 applies as well: God gives trials common to man, is confident His people can overcome them, and provides a way of escape. Taking that way requires faith, patience, humility, and sacrifice. Psalm 37, an acrostic teaching psalm, serves as a template. Its five sections urge believers not to burn with anger or envy over the seeming success of the wicked, who will soon wither like grass. They affirm that the righteous are better off, offer advice, and promise God's help and salvation. David's counsel is to trust the Lord and do good, cultivate faithfulness in small matters, delight in God, roll away bad attitudes, and be still and wait patiently rather than manipulating the situation. Those who do so will inherit the earth and enjoy abundant peace. Book One also touches on the themes of Torah, written on the heart, and of Unleavened Bread, putting away the bad and putting on the good.

Book One of the Psalms (Psalms 1-41) is the first of five divisions, an arrangement tied to the number five, which is associated with divine grace. In a chart correlating the five books of Psalms with the Pentateuch, the Festival Scrolls, and the sacred seasons, Book One corresponds to Genesis, the Song of Songs, and the Passover season. Its summary psalm is Psalm 146, and its themes are Christ's human life, sacrifice, deliverance, and salvation. The chart is offered as a tool for reading these related books together during their matching seasons, so that themes common to them can deepen understanding. Psalm 1, the opening psalm that sets the theme for the book, is known well by memory because it has been set to a tune ("Blessed and happy is the man"), which illustrates how setting Scripture to music helps it be remembered. Book One receives little further treatment, since the focus falls on Book Five as the book suited to the winter months before Passover.

In the book of Psalms, laments constitute a significant portion, with about one-third of the 150 psalms being expressions of sorrow or complaint. This prevalence underscores the reality of human suffering and distress. Individual laments are primarily found in Book One, comprising the first 41 psalms, making this section front-loaded with expressions of personal grief. As one progresses through the Psalms, the focus shifts, with communal laments appearing more in later books and praise psalms becoming predominant, especially in Book Five. The laments in Book One often reflect personal crises, where the psalmist appeals to God for rescue from situations such as illness, false accusations, persecution, or warfare. These psalms bring the harsh realities of life into full view, encouraging reflection on trials and fostering both emotional and intellectual processing of grief. Through these early psalms, God provides numerous opportunities to learn from life's woes and to seek His help in times of trouble.