But the children of the murderers he did not execute, according to what is written in the Book of the Law of Moses, in which the Lord commanded, saying, “Fathers shall not be put to death for their children, nor shall children be put to death for their fathers; but a person shall be put to death for his own sin.”
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The children of the murderers he did not kill - This seems to be noted as a rare instance of clemency (compare the note on [Reference 2 King…

Even with the kings of Israel. — Probably some words have fallen out, and the original text was: “and was buried in Samaria

But the children of the murderers he slew not Which is an instance of his clemency and goodness, and of his strict regard…

Amaziah began well, but did not continue as he had begun. It is not enough to do what our pious predecessors did, merely to keep up the common usag…
Albert Barnes
AlbertBarnes