מלכים ב יט:ג פירוש: רש״י, Metzudat David וMetzudat Zion

[And] debate. That the wicked are debating¹Alternatively, ותוכחה means “disgrace.—Targum Or “reproof.”—Radak and showing evidence to [support] their words, claiming, “We have the power and the strength.”²Alternatively the phrase refers to God and means, “may He rebuke for the words, etc.”

The enemy is praising his success, saying his hand is better than mine.

Similar to the words "argument" or "clarification".