Freedom in Christ is often spoken of very loosely, as a floaty mental whisp more than a concrete reality. Modern notions of Christian Freedom seem to mean we can sin but avoid consequences.
Freedom in Christ is ultimately freedom from sin, as Romans 6 describes it.
Sin had me bound, it controlled me, it wouldn’t let go. Sin bound everything I did to the extent that nothing in me was good. I was incapable of doing one right or good thing. It was evil slavery.
But then I died in Christ! Dead guys are not bound to laws! Where there is no law there is no transgression. I was raised up to new life in Christ, a life that was free from sin.
Do I still sin? Yes, but I am no longer captive to it at all times. In fact, as I persevere in my freedom in Christ, sin fades until ultimately I am completely conformed to the image of Christ.
Being free from sin does not leave me as the same guy, just gets away with sin now. No, freedom from sin frees up my time, energy, resources, mind, soul and body. I have time on my hands now that I’ve given up many fleshly patterns that bound me. I’m free from me!
Now that I am free from sin I freely bind myself as a servant of righteousness with fruit unto holiness and the end everlasting life.
Paul’s notion of freedom is to use it to serve. Freedom in Christ is not permission to be hedonistically narcissistic. Proper freedom always results in me doing what is right, the right stuff I could never do while bound to sin.
True Freedom always leads to service. That’s how you know you have it.
Being then made free from sin, ye became the servants of righteousness.
But now being made free from sin, and become servants to God
For though I be free from all men, yet have I made myself servant unto all
1 Corinthians 9:19