Following Jonah’s success in leading the people of Nineveh to repentance, along comes another generation that fell into sinning.

Nahum prophesied about the consequences of their disobedience. Idol worship is always a key ingredient and is a recipe for destruction.

Knowing that G-d is One and Alone. Thus, has jealousy against those claiming that there are others pertaining to G-d (Trinity, Triune or 3-in-1 G-d).

G-d being slow to anger proves that He does not hasten His revenge. But, it does not mean He will acquit either.