David Prays at an Altar Before Battleby emmanuel_higgins

Psalms 33:17

An horse is a vain thing for safety: neither shall he deliver any by his great strength.

A horse is a vain hope for safety, for even its great strength cannot rescue or deliver anyone. Military power is likewise no sure source of deliverance, so armies and weapons cannot guarantee safety. True security rests in the Lord alone, who is the help and shield of those who trust and hope in Him. Israel was thereby taught that Jehovah and not armies is their strength and deliverer.