Sforno on Deuteronomy 13:8/ספורנו על דברים י״ג:ח׳

1הקרובים אליך, even though these nations live in your vicinity and you are aware of the lies which their religion is based upon, and because you are, there would be no reason to worry about the influence of such a religion upon you.

2או הרחוקים ממך מקצה הארץ, so that on account of the very distance there is no real concern that you would learn from their ways.