1 John 5:15

and if we know he listens to whatever we ask, we know we obtain the requests we have made to him.

Mark 11:24

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

Luke 11:9-10

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

1 John 5:18-20

We know that anyone who is born of God does not sin; He who was born of God preserves him, and the evil One never catches 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 I tell you, whatever you pray for and ask, believe you have got it and you shall have it.
Luke 11:9
So I tell you, ask and the gift will be yours, seek and you will find, knock and the door will open to you;

General references

Matthew 21:22
All that ever you ask in prayer you shall have, if you believe."