"Jesus came to save the lost and heal the sick." Luke 19:1-10
Question: If it's God's 'Will' for everyone to receive healing, then why isn't everyone healed.
Answer: It's also God's 'Will' for everyone to be saved but everyone doesn't receive their salvation.
*The provision is available - it's up to us to receive it and we receive through faith.
And.."Faith comes by hearing and hearing by the Word of God." Romans 10:17