John Calvin Commentary Luke 12:57

"And why even of yourselves judge ye not what is right?" — Luke 12:57 (ASV)

And why even of yourselves, etc.? Here Christ opens up the source of the evil and, as it were, applies the lancet to the ulcer. He tells them that they do not look deeply into their own consciences and there examine within themselves, as in the presence of God, what is right. The reason why hypocrites are so much disposed to make objections is that they throw their swelling words into the air carelessly, and never exercise calm thought or place themselves before the tribunal of God, so that the truth, once it is ascertained, may be fully embraced.

When Luke says that this was spoken to the multitudes, he does not contradict the narrative of Matthew and Mark; for it is probable that Christ adapted his style generally to the followers and disciples of the scribes, and to other despisers of God who resembled them, of whom he perceived there were too many; for this present complaint or expostulation was applicable to that entire rabble.