Eusebius of Caesarea — as excerpted in the Catena Aurea on Luke 20:1-8

“His question concerning John the Baptist is not from whence was he sprung, but whence received he his law of baptism But they feared not to shun the truth. For God sent John as a voice, crying, Prepare ye the way of the Lord. But they dreaded to speak the truth, lest it should be said, Why did ye not believe? and they scruple to blame the forerunner, not from fear of God, but of the people; as it follows, And they reasoned within themselves, saying, If we shall say, From, heaven; he will say, Why then believed ye him not.”