Psalm 88

The darkest psalm. Heman has been afflicted since youth, feels God's wrath and terrors, has lost his friends, and asks whether the dead can praise God. There's no turn to praise at all. The last word is "darkness." Yet he keeps praying "day and night" and "in the morning," and he calls God "the God of my salvation" in the first line. That this is in the Bible means God makes room for prayers that end in the dark. Faith can be simply refusing to stop talking to Him.

"But to You, O LORD, I cry for help; in the morning my prayer comes before You." (Psalm 88:13)

Versions/Hebrew: 88:18 ends with meyudda'ai machshach [3045, 4285], literally "my acquaintances: darkness," or "darkness is my familiar friend." KJV: "mine acquaintance into darkness."