Psalm 3 is a psalm written by King David when he was running from his son, Absalom. Crazy story! If you haven’t read it, look into it, it’s quite dramatic. Anyway, David’s initial concern in this psalm is that that he has a lot of enemies who are coming against him.
They try to make him lose hope by saying that God will not deliver him. He takes a rest, a Selah, and comes back to say “But you are a shield around me, O Lord; you bestow glory on me and lift up my head. To the Lord I cry aloud, and he answers me from his holy hill.” Instead of trusting in what his enemies said against him, he changed mental directions and shifted his focus on what he believed that God would do for him. He believed that God would protect him and answer him when he calls.
David then goes on to say “I lie down and sleep; I wake again, because the Lord sustains me. I will not fear the tens of thousands drawn up against me on every side.” After another rest, or Selah, David is showing how much he trusts in the Lord’s work. Instead of going back and forth with his enemies and instead of trying to figure out how to win on his own, he actually chooses to go to sleep.
David was running for his life, complaining about how many enemies he had against him, and he trusted God so much that he said, I’ll just lie down and sleep now. David acknowledge that he had problems, real problems. He wasn’t disillusioned about that. But he trusted in God so much that he could reframe his thinking toward God’s truth and then rest, literally, sleep well, knowing that God was fighting for him. Be encouraged!