English: “The near ones to you” — What difference is there between near and far? Rather, this is what it means: from the nature of the near ones you learn the nature of the far ones.
On the daf / in context: The mesis characteristically points to distant deities; the verse teaches that one should examine the nearby cults, whose emptiness is evident, and thereby judge the distant ones as well.
Type of Learning
Derash on the verse (Sanhedrin) — using the near to evaluate the far.
What Is Learned
From the emptiness of the nearby gods one may deduce the emptiness of the distant gods that the mesis promotes.