וְאֶפְרַ֙יִם֙ לֹ֣א הוֹרִ֔ישׁ אֶת־הַֽכְּנַעֲנִ֖י הַיּוֹשֵׁ֣ב בְּגָ֑זֶר וַיֵּ֧שֶׁב הַֽכְּנַעֲנִ֛י בְּקִרְבּ֖וֹ בְּגָֽזֶר׃ (פ)
Efraim não expulsou o cananeu que habitava em Gezer; e o cananeu habitou no meio deles em Gezer.
Sforno
לא ישבו בארצך. In the area which you have conquered and take up residence in. Unfortunately, the Israelites ignored this warning of the Torah as we know from Judges 1,29 וישב הכנעני בקרבו בגזר, as well as Judges 1,33 וישב בקרב הכנעני יושבי הארץ, [the Israelites lived in mixed communities, in some they were the majority, in others even only the minority. Ed.]