Matthew 15:10
Jesus called the crowd to Him and said, "Listen and understand.

Matthew 13:51
Have you understood all these things?" "Yes, " they answered.

Matthew 16:9, 11
Do you still not understand? Do you not remember the five loaves for the five thousand, and how many basketfuls you gathered? . . .

Isaiah 28:9, 10
Who is it He is trying to teach? To whom is He explaining his message? To infants just weaned from milk? To babies removed from the breast? . . .

Mark 6:52
for they had not understood about the loaves, but their hearts had been hardened.

Mark 7:18
"Are you still so dull?" He asked. "Do you not understand? Nothing that enters a man from the outside can defile him,

Mark 8:17, 18
Aware of their conversation, Jesus asked them, "Why are you debating about having no bread? Do you still not see or understand? Do you have such hard hearts? . . .

Mark 9:32
But they did not understand this statement, and they were afraid to ask Him.

Luke 9:45
But they did not understand this statement. It was veiled from them so that they could not comprehend it, and they were afraid to ask Him about it.

Luke 18:34
But the disciples did not understand any of these things. The meaning was hidden from them, and they did not comprehend what He was saying.

Luke 24:45
Then He opened their minds to understand the Scriptures.

Hebrews 5:12
Although by this time you ought to be teachers, you need someone to reteach you the basic principles of God's word. You need milk, not solid food!