Bible Verses About Union With Christ: Christ being in us

Therefore if any man be in Christ, he is a new creature: old things are passed away; behold, all things are become new.

I am crucified with Christ: nevertheless I live; yet not I, but Christ liveth in me: and the life which I now live in the flesh I live by the faith of the Son of God, who loved me, and gave himself for me.

If ye abide in me, and my words abide in you, ye shall ask what ye will, and it shall be done unto you.

For he hath made him to be sin for us, who knew no sin; that we might be made the righteousness of God in him.

There is therefore now no condemnation to them which are in Christ Jesus, who walk not after the flesh, but after the Spirit.