Nobody is born Trinitarian, and most who eventually identify with Jesus Christ, start to do so long before they hear about Neoplatonist philosophies such as divine hypostasis and hypostatic union. So there may not even need to be repentance from such ideas because the pagan ideas never even get embraced. The mantra still stands: The Lord knows who are His own and everyone who confesses the Lord Jesus must turn away from evil. In the meantime, we face an unfortunate situation in our knowledge of the truth - that truth to which Jesus holds. The problem is that God does know who are His own, and He knows that many of them sin. The rebukes have gone unheeded by so many. And yet God still wants us to find blessing by association with those He knows to be His own, like Naaman only finding blessing by washing in the river Jordan, despite having nice rivers back in Syria.
