2 Corinthians 13:3-6

You want proof that Christ is speaking through me. My proof is that he is not weak among you, but he is powerful. It is true that he was weak when he was killed on the cross, but he lives now by God’s power. It is true that we are weak in Christ, but for you we will be alive in Christ by God’s power. Look closely at yourselves. Test yourselves to see if you are living in the faith. You know that Jesus Christ is in you—unless you fail the test. But I hope you will see that we ourselves have not failed the test.