John 15:16:

Ye have not chosen me, but I have chosen you, and ordained you, that ye should go and bring forth fruit, and that your fruit should remain: that whatsoever ye shall ask of the Father in my name, he may give it you.

Notes on John 15:16:

If there were no specific promises of healing in the Bible, this would prove that you could ask for it and receive it from your Father.  God delights in answering prayer.  He is not holding back answers!  He considers praying and getting answers to be bearing fruit!

Remember that your healing is already paid for, so asking in Jesus’ name would really be just “receiving” (“taking”) what God has already provided for you when you pray.

See also:

Healing Is a Good Thing
The Power in the Name of Jesus
We Hold the Keys
Who You Are and What You Have