Wait on the LORD; be of good courage, and he shall strengthen your heart: wait, I say on the LORD. (Ps 27:14)
We can be of good courage, when we wait on the LORD. He will strengthen us… this David has experienced so often. As he fled from Saul, being hunted down in the hills like a wild animal… David waited. Revenge lies with God alone. We are only required to wait on Him… and in Him our hearts will be strengthen.