Catholic Commentary
The Righteousness and Faithfulness of God's Word
4For Yahweh’s word is right. All his work is done in faithfulness.5He loves righteousness and justice. The earth is full of the loving kindness of Yahweh.
Psalms 33:4–5 declares that God's word is morally upright and truthful, grounding creation itself in divine order. God's love for righteousness and justice flows from His nature, filling the earth with steadfast covenantal love rather than arbitrary power.
God's word is not merely powerful—it is morally straight, the plumb line of reality itself, and springs from a God whose very nature is righteous love.
The spiritual sense deepens when read in light of the Incarnation: He who is the Word (Jn 1:1) is also the one in whom "righteousness and peace have kissed" (Ps 85:10). The divine dabar that Psalm 33 calls yāshār takes on flesh and dwells among us — and He is full of hesed and emet (grace and truth, Jn 1:14).
Catholic tradition illuminates these verses with particular depth through the lens of the Logos theology embedded in the prologue of John and developed by the Fathers. St. Augustine, in his Expositions on the Psalms, reads Psalm 33 (32 in the LXX) Christologically: the "word of the Lord" is not an impersonal utterance but the eternal Son, the Second Person of the Trinity, through whom all things were made (Jn 1:3). The "rightness" (yāshār) of the Word is therefore a Trinitarian attribute: the Son, as the perfect expression of the Father, cannot speak other than straight.
The Catechism of the Catholic Church affirms that "God's works reveal who he is in himself" and that His works of creation and redemption alike express His righteousness and faithful love (CCC 236, 295). More specifically, CCC 215 teaches that "God is also Truth itself, whose words cannot deceive" — a direct theological development of Psalm 33:4's assertion that the word is yāshār.
The pairing of tsedaqah and mishpat in verse 5 resonates powerfully with the Catholic social tradition. From Rerum Novarum to Laudato Si', the Church has insisted that justice (mishpat) is not a human construct but a participation in divine order. Pope Benedict XVI, in Deus Caritas Est §28, explicitly grounds the Church's social mission in this dynamic: justice is an expression of love (hesed), not its alternative. God loves justice because He loves persons, and persons can only flourish in right relationship.
St. Thomas Aquinas (Summa Theologiae I, q. 21) treats divine justice precisely as the ordered expression of God's goodness — the way His love gives to each what is fitting. This is the scholastic unpacking of tsedaqah u-mishpat: justice is not a constraint on love but its proper form.
Contemporary Catholics live in a culture that frequently pits justice against love, or treats morality as subjective preference rather than participation in objective order. Psalm 33:4–5 is a quiet but powerful counter-testimony. When a Catholic is tempted to reduce Scripture to a collection of spiritual feelings or to treat Church teaching as arbitrary rules, these verses call them back: the Word of God is yāshār — straight, not because the Church declares it so, but because the speaker is God himself, whose inner life is righteous love.
Practically, this passage invites an examination of conscience around the Catholic commitment to both personal morality and social justice. It is not possible, on this Psalm's terms, to love righteousness (tsedaqah) in one's private life while ignoring mishpat — the concrete claims of justice on one's neighbors, especially the poor. Equally, one cannot pursue structural justice while dismissing personal holiness. God loves both, inseparably.
For those whose faith has been shaken by scandal, inconsistency, or suffering, verse 4 offers not a quick comfort but a solid foundation: the Word itself is straight, even when its human bearers have been crooked.
Commentary
Psalms 33:4 — "For Yahweh's word is right"
The Hebrew word rendered "right" is yāshār (ישָׁר), meaning straight, upright, or level — the opposite of crooked or devious. This is not simply an epistemological claim (the word is accurate) but a moral and ontological one: the word of God is straight in the way a plumb line is straight, meaning it discloses and enacts the true order of things. The conjunction "for" (כִּי, kî) links this verse to the preceding call to praise (vv. 1–3), grounding the doxology in a reason: we praise because God's word is trustworthy by nature.
The parallelism in the verse continues: "and all His work is done in faithfulness" (emunah, אֱמוּנָה). Emunah carries the weight of firmness, constancy, and covenantal reliability. This is not merely intellectual correctness but relational fidelity — the Word acts faithfully because the One who speaks it is faithful. The Psalmist is already moving toward what the New Testament will fully disclose: the Word and the Speaker are inseparable in character.
Typologically, the "word" here participates in a developing theology of dabar (דָּבָר) — the divine word that both reveals and accomplishes. In the context of Psalm 33, which opens with creation (vv. 6–9 will describe the heavens made by God's word), the yāshār word is the same word by which the cosmos was brought into being. What God speaks, exists. What God speaks is straight. Therefore reality, rightly read, is straight.
Psalms 33:5 — "He loves righteousness and justice"
The Hebrew pairing tsedaqah u-mishpat (צְדָקָה וּמִשְׁפָּט) — righteousness and justice — is one of the great theological couplets of the Hebrew Bible (cf. Ps 97:2; Amos 5:24; Isa 28:17). Tsedaqah denotes right-relatedness: being in proper covenant standing with God and neighbor. Mishpat is the concrete enactment of that right-relatedness in social and legal structures — it is justice as experienced by the poor, the widow, the orphan. That God loves these things (not merely demands or permits them) is crucial: they flow from His nature, not merely from His will arbitrarily imposed.
The verse closes (in the full text) with "the earth is full of His steadfast love (hesed)." Hesed — covenantal lovingkindness — is the affective and relational dimension of divine justice. God's justice is never cold. His righteousness is never merely forensic. The that fills the earth is the proof that the word of verse 4 is not a law handed down from a distance, but the breath of a personal God who loves what He creates and governs.