In James 4:7, the James, the half brother of Jesus gives a short and succint instruction on how to stand firm in the face of trials and tribulation. "Submit yourselves to God. Resist the devil and he will flee." Paul gives further instruction in Ephesian 6:10-18 where he talks about the armor of God and how to prepare to stand firm. All of these was preceded by David, who in Psalm 35 also references the armor of God and God's salvation, Yeshua.