Or HaChaim on Deuteronomy 32:27/אור החיים על דברים ל״ב:כ״ז

1 לולא כעס אויב אגור, "If it were not for the fact that I am afraid of the anger of the enemy, etc." The author understands the word אגור in this verse as identical with the same word in Proverbs 6,8, i.e. the ant which gathers in the supplies needed in winter during the preceding summer. G'd also refers to the numerous occasions when the Gentile nations have caused Him to be angry. G'd is saying that He is concerned that by wiping out Israel all the Gentile nations will conclude (gather further evidence) that the Jewish religion had never been the truth as demonstrated by the disappearance of the Jewish people. This is the meaning of ינכרו צרימו, "their tormentor will misinterpret (the course of history)." Furthermore, פן יאמרו ידינו רמה, "lest they would say 'our hand has prevailed.' Not only will they deny the authenticity of the Jewish religion but they will continue to sin by claiming that their religion had been the true religion all along. They will not attribute their wellbeing to G'd's patience with them but to the power of the deities they worship and believe in.

2ולא ה׳ פעל כל זאת, "and it was not the Lord who accomplished all this." This is a reference to all the glory the Jewish people had achieved prior to its decline. The nations will claim as proof for their theory that a) the Israelites had not been doing something that they had not been doing for a long time; 2) the Gentile nations gained control over them and destroyed them.

3Alternatively, the Gentiles will conclude that what had befallen Israel could only be explained in terms of a combination of both alien gods and the Lord cooperating to bring about the demise of the Jewish people.