According to evangelical Christians, Psalm 138:8 is believed to have been authored by King David. David was a prominent figure in the Old Testament and is often referred to as a man after God’s own heart. He is known for his deep faith and trust in God, as seen in many of the psalms that are attributed to him.

In Psalm 138:8, David writes, “The Lord will perfect that which concerns me; Your mercy, O Lord, endures forever; Do not forsake the works of Your hands.” This verse reflects David’s unwavering belief in God’s faithfulness and goodness, and his confidence in God’s ability to bring about his plans and purposes.

Evangelical Christians view David as an example of someone who wholeheartedly trusted in God, even in the midst of challenges and difficulties. They often turn to psalms like Psalm 138:8 for encouragement and reassurance of God’s faithfulness and love for His people.