Bible Verses About Union With Christ: Our being in Christ

I have known a man in Christ, fourteen years ago--whether in the body I have not known, whether out of the body I have not known, God hath known--such an one being caught away unto the third heaven;

and we have known that the Son of God is come, and hath given us a mind, that we may know Him who is true, and we are in Him who is true, in His Son Jesus Christ; this one is the true God and the life age-during!