The all important first love. The church of Ephesus is doing a whole lot right. They contend for the faith as Jude would exhort, resist evil and suffer for Christ's name sake as Peter. Their first love no doubt was for Him as a person and for each other as His friends. For as much as they are doing right, they still need to obey the great commandment kjv@Mark:12:30-31.
In Pergamos we see a likeness to the two previous churches, faithfulness under severe persecution and having to deal with apostates amongst the brethren. This church however had not been as successful holding out the apostates and is in need of repentance in this same regard. We could say in effect that they need to return to their first love as their first love would not have mixed and commingled these blots and dead relics.
The church of Thyatira is battling a particular prophetess with much satanic influence. Effectually, they are consenting to her crafts by suffering her a place in their community/congregation. The Lord is dealing with her in His own way. He is asking them to beware and resist her and those that are bedding with her (consenting/allowing to her doctrine) by holding fast to the faith.
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