27 So they answered Jesus, "We do not know." "Nor do I tell you," He replied, "by what authority I do these things."
Matthew 21:27 Cross References - WNT
Matthew 15:14
14 Leave them alone. They are blind guides of the blind; and if a blind man leads a blind man, both will fall into some pit."
Matthew 16:3
3 and in the morning, 'It will be rough weather to-day, for the sky is red and murky.' You learn how to distinguish the aspect of the heavens, but the signs of the times you cannot.
Matthew 23:16-28
16 "Alas for you, you blind guides, who say, "'Whoever swears by the Sanctuary it is nothing; but whoever swears by the gold of the Sanctuary, is bound by the oath.'
17 "Blind fools! Why, which is greater? --the gold, or the Sanctuary which has made the gold holy?
18 And you say, "'Whoever swears by the altar, it is nothing; but whoever swears by the offering lying on it is bound by the oath.'
19 "You are blind! Why, which is greater? --the offering, or the altar which makes the offering holy?
20 He who swears by the altar swears both by it and by everything on it;
21 he who swears by the Sanctuary swears both by it and by Him who dwells in it;
22 and he who swears by Heaven swears both by the throne of God and by Him who sits upon it.
23 "Alas for you, Scribes and Pharisees, hypocrites, for you pay the tithe on mint, dill, and cumin, while you have neglected the weightier requirements of the Law--just judgement, mercy, and faithful dealing. These things you ought to have done, and yet you ought not to have left the others undone.
24 You blind guides, straining out the gnat while you gulp down the camel!
25 "Alas for you, Scribes and Pharisees, hypocrites, for you wash clean the outside of the cup or dish, while within they are full of greed and self-indulgence.
26 Blind Pharisee, first wash clean the inside of the cup or dish, and then the outside will be clean also.
27 "Alas for you, Scribes and Pharisees, hypocrites, for you are just like whitewashed sepulchres, the outside of which pleases the eye, though inside they are full of dead men's bones and of all that is unclean.
28 The same is true of you: outwardly you seem to the human eye to be good and honest men, but, within, you are full of insincerity and disregard of God's Law.
Luke 20:7-8
John 9:30
30 "Why, this is marvellous!" the man replied; "you do not know where he comes from, and yet he has opened my eyes!
John 9:40-41
Romans 1:18-22
18 For God's anger is being revealed from Heaven against all impiety and against the iniquity of men who through iniquity suppress the truth. God is angry:
19 because what may be known about Him is plain to their inmost consciousness; for He Himself has made it plain to them.
20 For, from the very creation of the world, His invisible perfections--namely His eternal power and divine nature--have been rendered intelligible and clearly visible by His works, so that these men are without excuse.
21 For when they had come to know God, they did not give Him glory as God nor render Him thanks, but they became absorbed in useless discussions, and their senseless minds were darkened.
22 While boasting of their wisdom they became utter fools,
Romans 1:28
28 And just as they had refused to continue to have a full knowledge of God, so it was to utterly worthless minds that God gave them up, for them to do things which should not be done.
2 Corinthians 4:3
3 If, however, the meaning of our Good News has been veiled, the veil has been on the hearts of those who are on the way to perdition,
2 Thessalonians 2:9-10
9 The appearing of the Lawless one will be attended by various miracles and tokens and delusive marvels--for so Satan works--
10 and by every kind of wicked deception for those who are on the way to perdition because they did not welcome into their hearts the love of the truth, so that they might be saved.