1 Corinthians 6:16 . . . For it is said, The two will become one flesh. (17) But he who unites himself with the Lord is one with him in spirit. [Or, many translations, 'one spirit with him.']
Ephesians 5:31 . . . and the two will become one flesh. (32) This is a profound mystery – but I am talking about Christ and the church.
Colossians 2:12 having been buried with him in baptism and raised with him through your faith . . .
Colossians 3:3 For you died, and your life is now hidden with Christ in God.