John 13:12

So after He had washed their feet, put on His garments again, and returned to the table, He said to them, "Do you understand what I have done to you?

John 13:7

"What I am doing," answered Jesus, "for the present you do not know, but afterwards you shall know."

Matthew 13:51

"Have you understood all this?" He asked. "Yes," they said.

Mark 4:13

"Do you all miss the meaning of this parable?" He added; "how then will you understand the rest of my parables?"

John 13:4

rose from the table, threw off His upper garments, and took a towel and tied it round Him.

Treasury of Scripture Knowledge

Summary

So after he had washed their feet, and had taken his garments, and was set down again, he said unto them, Know ye what I have done to you?

Bible References

Know

John 13:7
"What I am doing," answered Jesus, "for the present you do not know, but afterwards you shall know."
Matthew 13:51
"Have you understood all this?" He asked. "Yes," they said.
Mark 4:13
"Do you all miss the meaning of this parable?" He added; "how then will you understand the rest of my parables?"