Psalm 28
Fear that God will stay silent, a plea against two-faced people "who speak peace to their neighbors while malice is in their hearts," and then a turn: "He has heard." It ends with a shepherd image: carry them forever.
"The LORD is my strength and my shield; my heart trusts in Him, and I am helped. Therefore my heart rejoices, and I give thanks to Him with my song." (Psalm 28:7)