Christians are to cast all of their discontent, discouragement, despair, and suffering on the Lord, and trust Him for knowing what He’s doing with their lives. Along with submission (v. 5) and humility (vv. 5,6), trust in God is the third attitude necessary for victorious Christian living.
Commentary from the MacArthur study Bible, notes for 1 Peter 5:7.
-Word- pictures by DLink 