'In Christ' in the Bible
To the saints and faithful brethren in Christ at Colosse, grace be unto you, and peace from God our Father, and the Lord Jesus Christ.
since we heard of your faith which ye have in Christ Jesus: and of the love which ye bear to all saints
For God was very pleased to have all of [His] fullness dwell in Christ [See 2:9],
[And this He will do] provided that you continue to stay with and in the faith [in Christ], well-grounded and settled and steadfast, not shifting or moving away from the hope [which rests on and is inspired by] the glad tidings (the Gospel), which you heard and which has been preached [as being designed for and offered without restrictions] to every person under heaven, and of which [Gospel] I, Paul, became a minister.
At present I am glad to be suffering in your interest, and I am making up in my own person what is lacking in Christ's sufferings for the church, which is his body.
whom we proclaim, [by] admonishing every person and teaching every person with all wisdom, in order that we may present every person mature in Christ,
For though I am not present in the flesh, still I am with you in the spirit, seeing with joy your order, and your unchanging faith in Christ.
The fullness of divine nature lives in Christ's bodily form. (Greek: theotes: essence and nature of God) (Only the Son of God could have divine attributes, the inherited qualities from the Father)
And you are in Him, made full and having come to fullness of life [in Christ you too are filled with the Godhead -- "Father, Son and Holy Spirit -- "and reach full spiritual stature]. And He is the Head of all rule and authority [of every angelic principality and power].
In whom also ye are circumcised with circumcision made without hands, by putting off the sinful body of the flesh, through the circumcision that is in Christ,
and having divested principalitys and powers, he made them an example of obedience, and caus'd them to triumph in Christ.
These things are [only] a shadow of future things, but the body [i.e., the real substance of things] belongs to Christ. [Note: The idea here is that the ritual observances of the Mosaic law were like shadows pointing to the reality of life in Christ].
Children, always obey your parents, for that is commendable in Christians.