If you abide in Me, and My words abide in you, you will ask what you desire, and it shall be done for you.
John 15:7
Surrounding context
15:6 If anyone does not abide in Me, he is cast out as a branch and is withered; and they gather them and throw them into the fire, and they are burned.
15:7 If you abide in Me, and My words abide in you, you will ask what you desire, and it shall be done for you.
15:8 By this My Father is glorified, that you bear much fruit; so you will be My disciples.