Devarim 31:6

Verse 6. Strive with all your might, and as if it depended on yourselves alone; be determined to overcome evils: have confidence in the Lord, and be not disheartened with the power of evil: the Lord, who has been through the same struggles in His Humanity, and is omnipotent, is present with you in the conflict; He will not fail you, nor forsake you.