Mark 4:13

And he said to them, "Do you not understand this parable? And how will you understand all the parables?

Revelation 3:19

As many as I love, I reprove and discipline. Be zealous, therefore, and repent!

Matthew 13:18-23

"You, therefore, listen to the parable of the sower:

Matthew 13:51-52

"Have you understood all these [things]?" They said to him, "Yes."

Matthew 15:15-17

But Peter answered [and] said to him, "Explain this parable to us."

Matthew 16:8-9

But knowing [this], Jesus said, "Why are you discussing among yourselves that you did not take bread, [you] of little faith?

Mark 7:17-18

And when he entered into the house away from the crowd, his disciples asked him about the parable.

Luke 8:11-15

Now the parable means this: the seed is the word of God,

Luke 24:25

And he said to them, "O foolish and slow in heart to believe in all that the prophets have spoken!

1 Corinthians 3:1-2

And I, brothers, was not able to speak to you as to spiritual [people], but as to fleshly [people], as to infants in Christ.

Hebrews 5:11-14

Concerning this {we have much to say and it is difficult to explain}, since you have become sluggish in hearing.

Treasury of Scripture Knowledge

Summary

Mark 4:13

And he said unto them, Know ye not this parable? and how then will ye know all parables?

General references

Proverbs 28:5

Mark 7:18

Bible References

General references

Men of evil do not understand justice, but seekers of Yahweh understand completely.

And he said to them, "So are you also without understanding? Do you not understand that everything [that is] outside that goes into a person [is] not able to defile him?