25 Then He said to them: “O foolish ones, and slow of heart to believe in all that the Prophets have spoken!
Luke 24:25 Cross References - WPNT
Mark 7:18
18 So He said to them: “Can you really be without understanding? Don’t you perceive that nothing that enters a man from outside can defile him,
Mark 8:17-18
Mark 9:19
19 But He answered him by saying: “O unbelieving generation, how long shall I be with you, how long shall I put up with you? Bring him to me!”
Mark 16:14
14 Later He appeared to the eleven as they were reclining at the table; and He rebuked their unbelief and hardness of heart, because they did not believe those who had seen Him after He had risen.
Hebrews 5:11-12
11 concerning whom we have much to say, but it is hard to explain, since you have become sluggish in hearing.
12 Really, because although by this time you ought to be teachers, you need someone to teach you the elementary principles of God’s oracles all over again; you have come to the point of needing milk, not solid food!