הִשָּׁ֣מֶר לְךָ֗ פֶּן־תִּנָּקֵשׁ֙ אַחֲרֵיהֶ֔ם אַחֲרֵ֖י הִשָּׁמְדָ֣ם מִפָּנֶ֑יךָ וּפֶן־תִּדְרֹ֨שׁ לֵֽאלֹהֵיהֶ֜ם לֵאמֹ֨ר אֵיכָ֨ה יַעַבְד֜וּ הַגּוֹיִ֤ם הָאֵ֙לֶּה֙ אֶת־אֱלֹ֣הֵיהֶ֔ם וְאֶעֱשֶׂה־כֵּ֖ן גַּם־אָֽנִי׃
maka hati-hatilah, jangan sampai kamu terseret mengikuti mereka setelah mereka dimusnahkan dari hadapanmu, dan jangan sampai kamu mencari tahu tentang allah mereka dengan berkata, “Bagaimanakah bangsa-bangsa ini menyembah allah mereka? Aku pun akan berbuat demikian.”
Rashi
May a creditor search out all he has Heb. ינקש. A person who toils and searches, and longs passionately to do something is described by the expression מִתְנַקֵשׁ, i.e., shaken and going from place to place, like (Dan. 5:6): “and his knees knocked (נקשן) against each other.”
Ramban
THAT THEY TEACH YOU NOT TO DO AFTER ALL THEIR ABOMINATIONS, WHICH THEY HAVE DONE UNTO THEIR GODS. The purport thereof is that they will teach you to worship the Glorious Name353Further, 28:58. with the burning of your sons and daughters and every abomination to the Eternal, which He hateth,354Above, 12:31. and so ye sin against the Eternal your G-d355In Verse 18 before us. Who has warned you against saying, How used these nations to serve their gods? even so will I do likewise.356Above, 12:30. Now the Torah warned them, They shall not dwell in thy Land, lest they make thee sin against Me, for thou wilt serve their gods, for they will be a snare unto thee,331Exodus 23:33. which is an admonition against idolatry, for if you make a covenant with them and their gods, they will dwell in your Land and many of them will entice you to worship the idols. He added here to explain that thou shalt save alive nothing that breatheth,321Verse 16. for even one of them that remains among you to serve you, will remind you of the worship of their gods and perhaps you will be persuaded to do so to the Glorious Name353Further, 28:58. and you will sin against Him, blessed be He.
Siftei Chakhamim
His penalty is not death, but he transgresses a negative precept. Rashi means that this applies [only] if it is not the usual way of worshipping it. Whereas if it is the usual way, we derive from “How did these nations worship. . .” (Devarim 12:30), that all [usual] ways are punished with death, as Rashi explained the verse, “How did these nations worship. . .”