Mark 8:21

And He was saying to them, “Do you not yet understand?”

Mark 6:52

for they had not gained any insight from the incident of the loaves, but their heart was hardened.

Psalm 94:8

Pay heed, you senseless among the people;
And when will you understand, stupid ones?

Matthew 16:11-12

How is it that you do not understand that I did not speak to you concerning bread? But beware of the leaven of the Pharisees and Sadducees.”

Mark 8:12

Sighing deeply in His spirit, He *said, “Why does this generation seek for a sign? Truly I say to you, no sign will be given to this generation.”

Mark 8:17

And Jesus, aware of this, *said to them, “Why do you discuss the fact that you have no bread? Do you not yet see or understand? Do you have a hardened heart?

Mark 9:19

And He *answered them and *said, “O unbelieving generation, how long shall I be with you? How long shall I put up with you? Bring him to Me!”

John 14:9

Jesus *said to him, “Have I been so long with you, and yet you have not come to know Me, Philip? He who has seen Me has seen the Father; how can you say, ‘Show us the Father’?

1 Corinthians 6:5

I say this to your shame. Is it so, that there is not among you one wise man who will be able to decide between his brethren,

1 Corinthians 15:34

Become sober-minded as you ought, and stop sinning; for some have no knowledge of God. I speak this to your shame.

Treasury of Scripture Knowledge

Summary

Mark 8:21

And he said unto them, How is it that ye do not understand?

How

General references

Matthew 16:10

Bible References

How

Sighing deeply in His spirit, He *said, “Why does this generation seek for a sign? Truly I say to you,

no sign will be given to this generation.”