The border of the children of Ephraim according to their families was [thus]: the border of their inheritance eastward was Ataroth Addar, to Beth Horon the upper;
When Solomon came to power, there were no longer any Canaanites in Gezer; they had already been killed by the king of Egypt  (Joshua 16:15).  It is true that Solomon, after this transfer of Gezer to his domain by Pharaoh rounded up the remnant of all the Canaanites in Israel and made forced-laborers, or servants out of them but nowhere do we find that any inhabitants of Gezer were included in that Solomonic levy.  Thus, it is clear that once again, the overwilling critics to find evidence of a LATE DATE of Joshua are totally in error.  The Ephraimites, not Solomon, are here said to have reduced the Gezerites to slavery, and, on that grounds, we must reject the assumption of Woudstra that Gezer maintained its independence.  How could that be true with its citizens serving as slaves of Israel?  We have already determined that the expression, "unto this day," has no bearing whatever on dates but is merely an idiom affirming the truth of the narrative.