Mark 11:24

So I tell you, whatever you pray for and ask, believe you have got it and you shall have it.

and we get from him whatever we ask, because we obey his commands and do what is pleasing in his sight.

Ask and the gift will be yours, seek and you will find, knock and the door will open to you;

All that ever you ask in prayer you shall have, if you believe."

So I tell you, ask and the gift will be yours, seek and you will find, knock and the door will open to you;

And on that day you will not ask me any questions. Truly, truly I tell you, whatever you ask the Father, he will give you in my name;

Now the confidence we have in him is this, that he listens to us whenever we ask anything in accordance with his will;

I tell you another thing: if two of you agree on earth about anything you pray for, it will be done for you by my Father in heaven.

He also told them a parable about the need of always praying and never losing heart.

and I will do whatever you ask in my name, that the Father may be glorified in the Son;

If you remain in me and my words remain in you, then ask whatever you like and you shall have it.

Whoever of you is defective in wisdom, let him ask God who gives to all men without question or reproach, and the gift will be his.

the prayer of faith will restore the sick man, and the Lord will raise him up; even the sins he has committed will be forgiven him.

Treasury of Scripture Knowledge

Therefore I say unto you, What things soever ye desire, when ye pray, believe that ye receive them, and ye shall have them.