25 He said to them, "O foolish men, with hearts so slow to believe, after all the prophets have declared!
Luke 24:25 Cross References - Moffatt
Mark 7:18
18 He said to them, "So you do not understand, either? Do you not see how nothing outside a man can defile him by entering him?
Mark 8:17-18
Mark 9:19
19 He answered them, "O faithless generation, how long must I still be with you? how long have I to bear with you? Bring him to me."
Mark 16:14
14 Afterwards he appeared at table to the eleven themselves and reproached them for their unbelief and dulness of mind, because they had not believed those who saw him risen from the dead. [But they excused themselves, saying, "This age of lawlessness and unbelief lies under the sway of Satan, who will not allow what lies under the unclean spirits to understand the truth and power of God; therefore," they said to Christ, "reveal your righteousness now." Christ answered them, "The term of years for Satan's power has now expired, but other terrors are at hand. I was delivered to death on behalf of sinners, that they might return to the truth and sin no more, that they might inherit that glory of righteousness which is spiritual and imperishable in heaven."]
Hebrews 5:11-12
11 On this point I have a great deal to say, which it is hard to make intelligible to you. For you have grown dull of hearing.
12 Though by this time you should be teaching other people, you still need someone to teach you once more the rudimentary principles of the divine revelation. You are in need of milk, not of solid food.