If you think these verses are connected... and if you think it is not written to Jews leaving Christianity, but Christians leaving the local assembly (and still staying Christians)... ok
The apostate Jews because the promised time of reformation had come, it caused division in the families. The Jews that refused to recognize that the shadows and types had become substance treated other Jews as if they were strangers.(Gentiles)
They were looking to a city as if the heavenly Jerusalem, the continuing city was the earthy and not walking by the faith of Christ which comes from hearing God, called the hearing of faith. The passage was not saying we need a man to teach us as to the gathering together. But more towards not to forget rejecting the messengers of God, they could be making the hearing of faith without effect. Some of those strangers were hid.
in which the scriptures inform us. (Of whom the world was not worthy
they wandered in deserts, and
in mountains, and
in dens and caves of the earth, as if he hid the better ones from assembling together. It would seem he begun with the most popular and worked the way up to those whose names were not mentioned, the first will be last and the last first
I think the verse below compliments the chapter ten passages
Let brotherly love continue.Be not forgetful to entertain strangers: for thereby some have entertained angels unawares. Heb 13:1