Link said:
I have found one passage of scripture in which Paul 'discoursed' all night long with a group of believers before he left the next morning. This passage does not demand that a sermon was preached. Paul may have been holding a discussion.

From studying scripture, I do not find that the early churches were instructed to have one Sunday sermon. Rather, I find the following instructions for what to do in meetings.

I Corinthians 14: 26. How is it then, brethren? when ye come together, every one of you hath a psalm, hath a doctrine, hath a tongue, hath a revelation, hath an interpretation. Let all things be done unto edifying.

Hebrews 10:
24. And let us consider one another to provoke unto love and to good works:
25. Not forsaking the assembling of ourselves together, as the manner of some is; but exhorting one another: and so much the more, as ye see the day approaching.

Notice that when they met together, they exhorted one another.

From reading scripture, we can see that the early churches met together primarily in homes and ate a holy dinner together, and different members spoke to edify the assembly.

Any comments.
but the early church is a result of a sermon. PETER ONE Acts 2:14-42

-- I was predestined to be an Arminian, but chose instead to be a Calvinist, swallowed the TULIP bulb