From quote: I don't recall reading were Jesus ever preached in a church.
He most certainly did, and often.
Matthew Chapter 4 verse 23. And Jesus went about all Galilee, TEACHING IN THEIR SYNAGOGUES (churches), AND PREACHING THE GOSPEL OF THE KINGDOM, and healing in all manner of sickness and all manner of disease among the people.
Matthew Chapter 9 verse 35. And JESUS WENT ABOUT "ALL THE CITIES AND VILLAGES" TEACHING IN THEIR SYNAGOGUES (churches), AND "PREACHING THE GOSPEL OF THE KINGDOM, and healing every sickness and every disease among the people.
Matthew Chapter 12 verse 9. And when He was departed thence, He went into THEIR SYNAGOGUE (church):
Mark Chapter 1 Verse 21. And they went into Capernaum, and straightway ON THE SABBATH DAY HE ENTERED INTO THE SYNAGOGUE (church), AND TAUGHT.
Luke Chapter 4 verse16. And he came to Nazareth, where He had been brought up: and AS HIS CUSTOM WAS, HE WENT INTO THE SYNAGOGUE (church) ON THE SABBATH DAY, AND STOOD UP FOR TO READ.
And let us not forget Christ's most famous sermon, in Matthew Chapter 5, His SERMON ON THE MOUNT.