A short explanation about the verse:

But I trust in your unfailing love; my heart rejoices in your salvation." - Psalm 13:5

In this verse, the psalmist expresses their unwavering trust in God's unfailing love. Despite any challenges or difficult circumstances they may be facing, they find comfort and hope in knowing that God's love is constant and dependable. This trust in God's love brings the psalmist great joy, to the point that their heart rejoices in the assurance of God's salvation. It is a testament to the psalmist's deep faith and reliance on God's steadfast love and deliverance.