This is the impossibility of Jesus' situation. He says "had they known the One who sent Him", well obviously no one there does know, neither can they know until they believe on Him. Many will remember these words when they later do finally come to know and believe on.
If they don't say something they are perceived as co-conspirators. If they do say something they are revealed to be fools and hypocrites. What is left to them? Funny how the mob's reasoning and rationale puts the primary parties into impossible roles and positions. Thus is the heart of man.
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