Unit 1 (v. 5a): “But I trust in your lovingkindness”
The verse opens by setting the speaker apart from the situation described earlier: despite fear and opposition, he chooses a settled reliance on God. The reason for that reliance is God’s “lovingkindness,” a loyal, steady care that the speaker treats as reliable enough to lean his life on.
Unit 2 (v. 5b): “My heart rejoices in your salvation”
Trust is not only a decision; it reshapes the speaker’s inner life. “My heart” points to his core self—thoughts and feelings together. He anticipates joy “in your salvation,” meaning God’s act of rescue or deliverance from the present threat, and he speaks as if joy is now the appropriate response to that expected help.
Unit 3 (v. 5 as a whole): The logic of the turn
The two lines work together: confidence in God’s loyal care supports renewed joy. The speaker’s emotions are not presented as random optimism; they are anchored in what he believes God is like and what God will do. The “but” signals that this confidence stands against the visible circumstances.