1 John 5:15

And if we know that He listens to us in whatever we ask Him for, we know that we get from Him the things that we have asked Him for.

Mark 11:24

So then I tell you, whenever you pray and ask for anything, have faith that it has been granted you, and you will get it.

Luke 11:9-10

So I tell you, keep on asking, and the gift will be given you; keep on seeking, and you will find; keep on knocking, and the door will open to you.

1 John 5:18-20

We know that no one who is born of God makes a practice of sinning, but the Son who was born of God continues to keep him, and the evil one cannot touch him.

Treasury of Scripture Knowledge

Summary

And if we know that he hear us, whatsoever we ask, we know that we have the petitions that we desired of him.

General references

Bible References

We know

Mark 11:24
So then I tell you, whenever you pray and ask for anything, have faith that it has been granted you, and you will get it.
Luke 11:9
So I tell you, keep on asking, and the gift will be given you; keep on seeking, and you will find; keep on knocking, and the door will open to you.

General references

Matthew 21:22
And whatever you ask for in prayer, if you believe it, you will get it."