2 Corinthians 13:3-6

seeing that ye seek a proof of Christ that speaketh in me; who to you-ward is not weak, but is powerful in you: for he was crucified through weakness, yet he liveth through the power of God. For we also are weak in him, but we shall live with him through the power of God toward you. Try your own selves, whether ye are in the faith; prove your own selves. Or know ye not as to your own selves, that Jesus Christ is in you? unless indeed ye be reprobate. But I hope that ye shall know that we are not reprobate.