Unit 1 (v. 4a): “For Yahweh takes pleasure in his people.”
The verse begins by giving a reason: praise is fitting because Yahweh is not indifferent toward the community that belongs to him. “Takes pleasure” presents him as approving, welcoming, and delighted with “his people,” not merely tolerating them.
Unit 2 (v. 4b): “He crowns the humble with salvation.”
The second line describes the concrete outcome of that pleasure. Yahweh “crowns” the humble—people characterized by low status, meekness, or being brought down—by giving them “salvation,” portrayed as an honor placed on them like a crown. The image suggests public lifting up, not private sentiment.
Unit 3 (v. 4 overall): The movement from delight to honor
Together the lines move from God’s attitude (“takes pleasure”) to God’s action (“crowns”). The humble are singled out as the recipients of God’s honoring help, explaining why the community’s praise can be confident and celebratory.