Both verses express a feeling of abandonment by God. Psalm 22:1 is famously quoted by Jesus on the cross, highlighting the depth of human despair and the cry for divine presence.
Psalm 13:3 is a plea for God to 'light up my eyes,' which parallels the request in Psalm 119:18 for God to open the eyes to behold wondrous things in His law, emphasizing the need for divine enlightenment.
Psalm 13:5 speaks of trusting in God's steadfast love, similar to Psalm 52:8, which describes trusting in the steadfast love of God forever, highlighting the theme of enduring faith.
Both verses express a commitment to sing to the Lord because of His goodness. Psalm 13:6 concludes with a vow to sing to the Lord for His bountiful dealings, similar to the praise in Psalm 9:2.