Matthew 13:51
"Jesus saith unto them, Have ye understood all these things? They say unto him, Yea, Lord."
Cross References (ranked by relevance)
But without a parable spake he not unto them: and when they were alone, he expounded all things to his disciples.
When any one heareth the word of the kingdom, and understandeth it not, then cometh the wicked one, and catcheth away that which was sown in his heart. This is he which received seed by the way side.
He answered and said unto them, Because it is given unto you to know the mysteries of the kingdom of heaven, but to them it is not given.
When ye therefore shall see the abomination of desolation, spoken of by Daniel the prophet, stand in the holy place, (whoso readeth, let him understand:)
How is it that ye do not understand that I spake it not to you concerning bread, that ye should beware of the leaven of the Pharisees and of the Sadducees?
And he saith unto them, Are ye so without understanding also? Do ye not perceive, that whatsoever thing from without entereth into the man, it cannot defile him;
Do not ye yet understand, that whatsoever entereth in at the mouth goeth into the belly, and is cast out into the draught?