David, Thanks for pointing out the Greek word in Hebrews 10:25. I drilled it down to one of the root words in Thayer's definitions. "sunago" (G4863 in Strongs)
1. to gather together, to gather a. to draw together, collect 1. of fishes 2. of a net in which they are caught.
2. to bring together, assemble. collect a. to join together, join in one (those previously separated) b. to gather together by convoking. c. to be gathered, i.e. come together, gather, meet.
3. to lead with one's self a. into one's home, i.e. to receive hospitably, to entertain.
Isn't it interesting that the word for synagogue is built on a word that is related to hospitality?