Moses is recognized as the original psalmist of Israel, with his works setting a precedent for other psalmists in style and themes. The Pentateuch includes two Songs of Moses found in Exodus 15 and Deuteronomy 32, along with other poetic excerpts that may have been sung, such as those in Numbers 10:35-36, 21:27-30, and Deuteronomy 33. Additionally, Psalm 90 is attributed to Moses, and he is credited with writing Psalm 91. The significance of Moses' songwriting is affirmed in Revelation 15:3, where those victorious over the beast are depicted singing the song of Moses, the servant of God.

Moses emerges as a multifaceted psalmist, crafting songs of praise to God that extend beyond simple worship. In Psalms 90 and 91, his verses honor God, while in Exodus 15 and Deuteronomy 32, he also takes on the roles of historian and prophet through his poetry. In Exodus 15, known as the first Song of Moses, he recounts the miraculous crossing of the Red Sea and the destruction of the Egyptian army, exalting God's victory over Pharaoh and Egypt with triumphant, descriptive poetry. This song, divided into three parts—verses 1-5, 6-10, and 11-18—credits God for the deliverance of the Israelites, as seen in verse 2: The LORD is my strength and song, and He has become my salvation; He is my God, and I will praise Him. The middle section details God's direct involvement, with His right hand dashing the enemy and His breath parting the sea for Israel's passage. In the final section, Moses dons his prophetic role, predicting the terror of surrounding nations and foreseeing Israel's entry into the Promised Land as inevitable after witnessing such a divine act. He envisions a sanctuary in the mountain of God's inheritance and concludes with a powerful declaration of God's eternal reign in verse 18.

Moses, a towering figure among world religious leaders, ranks among the most influential, his impact enduring among many. He is seen as a human, akin to us, whom God endowed with skill and guidance to fulfill a significant role in His divine plan. His life, marked by growth, failures, and triumphs, mirrors ours on a grand scale. At times, he struggled to comprehend who God is and His actions, yet at others, his clarity of faith shone as an exemplary model of godly living. His understanding of God, refined over forty years of personal interaction with Him, remains his enduring legacy. His colossal failure at Kadesh, striking the rock, stands in stark contrast to his successes, offering profound lessons. At the end of his life, Moses left Israel a song that encapsulates much of what he learned about godly living, presenting it as doctrine or teaching. In this song, he proclaims the name of the LORD, summarizing in Deuteronomy 32:4 that He is the Rock, His work perfect, His ways just, a God of truth, without injustice, righteous and upright. The song divides into five sections: an introduction, God's faithfulness contrasted with Israel's faithlessness, God's just chastisement of Israel, His eventual compassion on them, and a conclusion. Through these, Moses expounds main themes: God's unwavering faithfulness, justice, providence, and mercy in His dealings with Israel; Israel's persistent forsaking of Him for other gods; God's justified reaction through disasters and scattering, yet restrained wrath; His compassion and mercy despite vengeance; and a vision of Gentiles rejoicing with Israel under God's faithful promises. Moses concludes with advice to Israel to set their hearts on his words, emphasizing that they are not futile but are their life, promising prolonged days through adherence to this teaching.

Moses, known as a prince, general, freedom-fighter, shepherd, leader, prophet, and law-giver, also stands as a psalmist, though this role is often the least recognized. Psalm 91, traditionally credited to Moses, follows Psalm 90 and is considered a companion poem, sharing themes of safety and protection that God's people can expect from Him. Verse after verse offers reassurance that our God will shield us from harm, illness, war, deceit, dangerous beasts, and evil. Moses emphasizes from the opening of the psalm that these promises are not guarantees but are reserved for those who dwell in the secret place of the Most High. This secret place likely refers to the Holy of Holies, a sanctuary accessible under the Old Covenant only to a select few like Moses, whom God called. Within Psalm 91, Moses provides three observations on entering this secret place: first, through faith, declaring trust in God as a refuge and fortress; second, through total devotion, making the LORD one's life; and third, through love for God, which leads to deliverance as promised by Him. Though God's promises are sure, Moses conveys that conditions must be met to receive His protection.