Psalms 4:8 - Exposition

I will both lay me down in peace, and sleep (comp. Psalms 3:5 ). His confidence in God enables David to lay himself down calmly and tranquilly to sleep, whatever dangers threaten him. He seeks his couch, and at once ( יחדּו ) slumber visits him. No anxious thoughts keep him tossing on his bed for hours . For thou, Lord, only makest me dwell in safety . David has a satisfaction in thinking that it is God only who watches over him. All other help would be vain, superfluous. God alone brought Israel through the wilderness ( Deuteronomy 32:12 ); God alone established Israel in Canaan ( Psalms 44:2 , Psalms 44:3 ). David feels that he needs no second helper and protector.