'In Christ' in the Bible

I was still unknown by face to the churches of Judea which were in Christ,

This was because of the false brothers secretly brought in, who stole in to spy out our liberty which we have in Christ Jesus, that they might bring us into bondage;

yet knowing that a man is not justified by the works of the law but through faith in Jesus Christ, even we believed in Christ Jesus, that we might be justified by faith in Christ, and not by the works of the law, because no flesh will be justified by the works of the law.

But if, while we sought to be justified in Christ, we ourselves also were found sinners, is Christ a servant of sin? Certainly not.

For you are all children of God, through faith in Christ Jesus.

There is neither Jew nor Greek, there is neither slave nor free man, there is neither male nor female; for you are all one in Christ Jesus.

For in Christ Jesus neither circumcision amounts to anything, nor uncircumcision, but faith working through love.