The apostle Paul put much emphasis on being in Christ. He wrote:
But God has chosen the foolish things of the world to put to shame the wise, and God has chosen the weak things of the world to put to shame the things which are mighty; and the base things of the world and the things which are despised God has chosen, and the things which are not, to bring to nothing the things that are, that no flesh should glory in His presence. But of Him you are in Christ Jesus, who became for us wisdom from God—and righteousness and sanctification and redemption—that, as it is written, “He who glories, let him glory in the LORD.”
Paul uses the phrase, “in Christ” seventy-five times in his writings.
Of himself he wrote:
I press toward the mark for the prize of the high calling of God in Christ Jesus. Philippians 3:14
When he wrote an epistle, he often referred to those in the church as those who were “in Christ.”
He understood that regeneration, or newness of life in Christ, is what makes a real and lasting change in a person’s life.
For in Christ Jesus neither circumcision nor uncircumcision avails anything, but a new creation. Galatians 6:15
Therefore, if anyone is in Christ, he is a new creation; old things have passed away; behold, all things have become new. 2 Corinthians 5:17
Paul, also fully understood the security that true believers have in Christ Jesus our Lord:
For I am persuaded that neither death nor life, nor angels nor principalities nor powers, nor things present, nor things to come, nor height nor depth, nor any other created thing, shall be able to separate us from the love of God which is in Christ Jesus our Lord. Romans 8:38-39
Who can name a religion that offers what Christ provides? I know of none!