15 And if we know that he hearkens to us, concerning whatever we ask; we know that we shall obtain the petitions which we have asked from him.
1 John 5:15 Cross References - Living_Oracles
Mark 11:24
24 for which reason I assure you, that what things soever you pray for, if you believe that you shall obtain them, they shall be yours.
Luke 11:9-10
1 John 5:18-20
18 We know that whoever has been begotten by God, does not sin; but he who is begotten by God, guards himself, and the wicked on does not lay hold on him.
19 We know that we are of God, and that the whole world lies under the wicked one.
20 Moreover, we know that the Son of God has come, and has given us understanding, that we might know him that is true; and we are in him that is true-in his Son Jesus Christ. This is the true God, and the eternal life.