To cause to stand, to set in place, to establish — and in the intransitive, to stand firm, to take a stand. Histēmi conveys both physical positioning and spiritual resolve. It is the verb of firmness and stability.
Paul commands believers to 'stand firm in the faith' (1 Corinthians 16:13) and to 'stand against the devil's schemes' wearing the full armor of God (Ephesians 6:11,14). The image is military: after the battle, still standing. Jesus 'stood' to teach, to judge, and to be judged. At the end of the age, every knee will bow and every person will 'stand before the judgment seat' (Romans 14:10). Standing is the posture of readiness, courage, and accountability.