DOC! When did you go OPC???
There is not an OPC anywhere near us, but when asked which denomination this baptized as an infant and life-long Presbyterian feels most comfortable with, I have always answered, the Orthodox Presbyterian Church.
While church affiliation is important, it is not the means of our salvation or the reason for our salvation which some misguided RCs believe. The Holy Spirit is the deliverer of God's gift of faith in Jesus Christ's sacrifice to the fallen sinner.
Some churches perceive God's grace more clearly than others, as these threads attest. Some churches very nearly obliterate God's word by the trappings of empty rituals and magical incantations and wooden statues and prayers to dead people.
I've sent Mark to the Westminster Confession of Faith, but sadly, he does not see the splendor of its Scriptural foundation.
I've also told Mark I'd probably feel comfortable worshiping in any Presbyterian church, any Reformed church, and most likely, almost any Protestant church where the word of God is preeminent.
Any church that adheres to the Bible cannot go too far astray. Any church that relegates the Bible to second place behind men and magisteriums is heading in the wrong direction.
So we preach the Gospel as God has commanded. It's up to God to open eyes and ears and to give the new heart.
Such a relief, eh, Gamecock? 8~)