Psalm 73 serves as the keynote psalm of Book 3. It opens by stating that God is good to Israel to such as are pure in heart. The psalmist describes nearly stumbling upon seeing the prosperity of the wicked who face no trouble and increase in riches while speaking against God and walking in earthly ways. These wicked appear always at ease yet the psalmist feels plagued and chastened despite efforts at innocence. The paradox grows too painful until the psalmist enters the sanctuary of God and understands their end. God sets the wicked in slippery places and casts them down to destruction as in a moment. The psalmist recognizes former foolishness like that of a beast before God. Nevertheless the psalmist remains continually with God who holds the right hand and guides with counsel before receiving to glory. The flesh and heart fail but God remains the strength and portion forever. Those far from God perish while it is good to draw near to God and put trust in the Lord.

Psalm 73 serves as the keynote psalm for Book Three of the Psalms. Themes of rebellion, forsaking God, judgment, exile, destruction, and death appear throughout this book. Psalm 73 is a personal psalm containing numerous first-person references. The author describes having envied the wicked before going to the sanctuary and experiencing a reversal of perspective. Psalm 73 concludes with the declaration that God alone is desired upon earth and that God is the strength of the heart and portion forever. The author states that those far from God shall perish while it is good to draw near to God and to put trust in the Lord God in order to declare all His works. This conclusion flows naturally into a psalm of praise. Psalm 73 differs from the psalm that follows because the problem addressed is internally motivated.

Psalm 73 is identified as one of the wisdom psalms, alongside Psalm 37, which approaches its subject with a degree of doubt rather than the confident, straightforward teaching found in psalms like Psalm 1 and Psalm 112. While Psalm 73 is ultimately positive about godliness, it questions the apparent prosperity of the wicked, wrestling openly with the seeming injustice of seeing evil people flourish while the righteous may struggle. This questioning approach distinguishes it from psalms that simply declare God's teaching and its rewards and punishments without hesitation. Instead, Psalm 73 works through this doubt within the body of the psalm itself, ultimately arriving at a declaration of faith by its conclusion. This pattern fits within the broader framework of wisdom psalms, which offer general principles about righteous living rather than absolute, guaranteed outcomes in every instance. The wisdom psalms as a category teach that virtue brings rewards and wickedness generally ends in disaster, but they do not promise that this will happen every single time, at least not within this present life. Psalm 73, by grappling with the visible success of the wicked, exemplifies the necessity of maintaining faith in God's justice even when circumstances do not immediately confirm it. The psalmist must reason through the apparent disconnect between righteous living and worldly reward before reaching a resolution of trust in God. This connects to the larger teaching that the ultimate resolution of blessings and curses may not appear in physical, temporal terms during one's lifetime, but rather in God's Kingdom, where eternal reward is granted to the righteous. God reserves the right to withhold visible rewards or punishments according to His purposes, and believers must trust that He works all things together for good for those who love Him, even when the immediate evidence seems to contradict divine justice. Psalm 73, therefore, serves as an example of how a wisdom psalm can honestly confront the tension between observed reality and godly conviction, ultimately reinforcing that one cannot judge God's justice by simple cause-and-effect reasoning in the present life. The psalmist's journey from doubt to faith models the proper response of a godly person who must reconcile what he sees in the world with what he knows to be true about God's eventual judgment and reward, arriving finally at renewed confidence in divine justice despite present appearances.

Psalm 73 helps to provide some explanation because it presents an event in the life of a godly man that is an almost perfect fit for expanding understanding of the paradox. Psalm 73 explores the seriousness of the challenge of discontent combined with envy. If left unresolved both of those reactions are dangerous. The issue in Psalm 73 is not merely a passing trial as it calls into question God's sense of justice and the psalmist himself expresses that it was to him a serious situation so much so that he says his foot almost slipped. The psalmist did the right things in order to receive a solution. Overall he not only endured it he actively endured it through prayer. He was not just passively enduring a confounding and confusing thought pattern. The psalmist reports that he went into the sanctuary and prayed in faith. God solved the problem. However Psalm 73 still does not answer why Solomon cautions readers so sternly regarding the paradox's spiritual dangers. The psalmist reacted correctly. The psalmist was in grave spiritual danger of misjudging his suffering as punishment for sin. In reality he was harshly judging God accusing Him of unfairly overdoing a painful correction. Earlier in the psalm the psalmist was indeed guilty of a sin. He clearly perceived his envy of the wicked. However his grasp of the real problem was late in coming that he was filled with fear and lacked faith that God was truly always with him overseeing his life his best interests and therefore his spiritual development. His lack of faith and its resulting fear drove his envy twisting his mind into perceiving the wicked as better off. The issue clarified when he went into the sanctuary and began to see through prayer that God was fully justified and not picking on him unfairly. By the term sanctuary he may have literally meant the Tabernacle or Temple but it does not have to be a literal building but a place of private prayer in communion with God where He enabled him to think correctly. Verses 21-24 clarify this. Thus the psalmist immediately began a four-step program. He continued on by faith enduring the suffering. He prayed fervently for God's solution to take effect. He firmly rejected any attempt to solve the problem on the basis of his own spiritual righteousness. He was thoughtfully careful that he did not misjudge his circumstances any further. This truth became the foundation for the psalmist's victory in his situation in Psalm 73. The responsibility is to trust Him as the psalmist did to walk by faith not by appearance or physical observation.