Christ states that the believer is linked to Him.
It is a faithful saying....if we believe not, yet he abideth faithful, he cannot deny himself.(2Tim.2:13)
No word straining.
The wording is very clear.
The Christian is considered part of Christ's Body and thus, His very self.
In fact, Christ died for the Church, his bride (Eph.5:25).
The wording is too clear and that is what is upseting you.
Calvinism puts God far away from man.
Christianity brings God inside of the believer, in an intimate relationship with him.
On the contrary...
"There is no sphere of existence over which Jesus is not sovereign, in virtue of his role both in creation (1:16-17) and in reconciliation (1:18-20). There can be no dualistic division between some areas which he rules and others which he does not" -- N.T. Wright, Colossians and Philemon Commentary --page 79