King David wrote the third Psalm as he was fleeing from his own son, Absalom. (King David's family was a mess, read more in 2 Samuel 13.) Let us begin by reading the passage...
"Lord, how many are my foes! How many rise up against me! Many are saying of me, “God will not deliver him.” But you, Lord, are a shield around me, my glory, the One who lifts my head high. I call out to the Lord, and he answers me from his holy mountain. I lie down and sleep; I wake again, because the Lord sustains me. I will not fear though tens of thousands assail me on every side. Arise, Lord! Deliver me, my God! Strike all my enemies on the jaw; break the teeth of the wicked. From the Lord comes deliverance.May your blessing be on your people."
While king David had enemy nations to deal with, he also had members of his family trying to kill him. His frustration is apparent in the first three statements of the psalm. Many thousands were after David. In spite of his predicament, David maintains his faith in God. God is faithful and David has experienced His unqualified favor many times. This is a good lesson for us: God is our sustainer too.
While our situations differ from David's, our relationship with God is the same. If David can trust God to deliver him from enemies and family alike, I can trust God to deliver me from my problems. Our deliverance comes from God's faithfulness. May God's blessings be on you this week! Amen.