'Union' in the Bible

To: The holy and faithful brothers in Colossae who are in union with the Messiah. May grace and peace from God our Father be yours!

Therefore as you have received Christ Jesus the Lord, walk in [union with] Him [reflecting His character in the things you do and say—living lives that lead others away from sin],

In union with him you were also circumcised with a circumcision performed without human hands by stripping off the corrupt nature by the circumcision performed by the Messiah.

And over all these put on love, which is the perfect bond of union;