Colossians 3 verse 11
Where there is neither Greek nor Jew, circumcision nor uncircumcision, Barbarian, Scythian, bond nor free: but Christ is all, and in all.

A few months after I put my trust in Jesus Christ as my Savior I was invited by some new Christian friends to join them at the Ulster Hall in Belfast for a Christian Youth event called Manifest. All these sorts of things were very new to me and I hardly knew anyone I was with.

The evening progressed through a time of music and announcements to the main speaker who delivered a rousing message about faith in Jesus Christ.
As I sat listening on my end of row seat something incredible happened. The speaker in his address made a comment about a Christian Retreat Centre where “Protestant Christians” and “Catholic Christians” would come and seek God together.
Immediately I heard a voice saying “there’s no such thing”. I turned to my right thinking it was the person beside me had spoken but it wasn’t them. Then the voice again said “there is no such thing as a Protestant Christian or a Catholic Christian, only Christian, and it is those who see Christ in you have the right to call you it”.
It was the first time I had heard what I perceived as the audible voice of God and what a revelation to my heart.

This truth has been so liberating throughout my walk with the Lord over the years.

Here is what a renowned Bible Commentator has to say.

It was the honour of man in innocence that he was made after the image of God; but that image was defaced and lost by sin, and is renewed by sanctifying grace: so that a renewed soul is something like what Adam was in the day he was created. In the privilege and duty of sanctification there is neither Greek nor Jew, circumcision nor uncircumcision, Barbarian, Scythian, bond nor free, v. 11. There is now no difference arising from different country or different condition and circumstance of life: it is as much the duty of the one as of the other to be holy, and as much the privilege of the one as of the other to receive from God the grace to be so. Christ came to take down all partition-walls, that all might stand on the same level before God, both in duty and privilege. And for this reason, because Christ is all in all. Christ is a Christian’s all, his only Lord and Saviour, and all his hope and happiness. And to those who are sanctified, one as well as another and whatever they are in other respects, he is all in all, the Alpha and Omega, the beginning and the end: he is all in all things to them. Matthew Henry