en_tn/2ch/33/24.md

put him to death

This is an idiom. AT: "killed him" (See: rc://en/ta/man/translate/figs-idiom)

conspired

"planned in secret" or "plotted"

king in his place

This is an idiom. AT: "became the next king" or "became the king of Judah" (See: rc://en/ta/man/translate/figs-idiom)