A word by Eric Ludy:
Rak Chazak: Israeli war cry still used today. Literally, the "oomph" of the spiritually zealous heart. The game face of a mighty man/woman. Tenacity of soul. The gritting of the teeth of the spirit-inspired warrior; and the bearing of those teeth to the enemy. A flush of spiritual fervor. The resolute and growling resolve for the glory of God!
Amats: Heavenly audacity. Rushing headlong into the most hazardous and impossible battles without pausing to consider the impossibilities. Confidence in victory before the field is taken. Swift-footed, all-believing, super-conquering, prevailing faith in the Lord of Battles!
Chazak Amats: The spirit of God! Be strong and of good courage! Fear not; nor be afraid of them! For the Lord your God is with you! He will not fail you or forsake you!