Matthew 20:22

But Jesus answered and said, You know not what you ask. Can you drink of the cup of which I am about to drink? They said to him, We can.

Mark 10:38

And Jesus said to them, You know not what you ask. Can you drink of the cup of which I drink? or be baptized with the baptism with which I am baptized?

James 4:3

you ask and do not receive, because you ask amiss, to expend on your pleasures.

Treasury of Scripture Knowledge

Summary

And king Solomon answered and said unto his mother, And why dost thou ask Abishag the Shunammite for Adonijah? ask for him the kingdom also; for he is mine elder brother; even for him, and for Abiathar the priest, and for Joab the son of Zeruiah.

Bible References

Why dost

Matthew 20:22
But Jesus answered and said, You know not what you ask. Can you drink of the cup of which I am about to drink? They said to him, We can.
Mark 10:38
And Jesus said to them, You know not what you ask. Can you drink of the cup of which I drink? or be baptized with the baptism with which I am baptized?
James 4:3
you ask and do not receive, because you ask amiss, to expend on your pleasures.