Jesus said, He who believes and is baptized shall be saved/healed, Mark 16:16.
We are able to know that we are saved and every one should know this.

The Bible says, "We know that we have passed from death to life," 1 John 3:14. There are many things  in which we shall never know; but, thank God, we can know we have passed from death to life.
Paul said, If anyone be in Christ, he or she is a new creature: old things are passed away; behold, all things are become new, 2 Corinthians 5:17.
Everyone who has never accepted Jesus as Savior must remember that 'all have sinned and come short of the glory of God, Romans 3:23

Except you repent, you shall all likewise perish, Luke 13:5.

Jesus said, 'you must be born again, John 3:7.
God is waiting to bless us. He longs to reveal Himself to us in His fullness.
If we will serve God, He is Jehovah 'rapha the Lord that heals.'
Jesus said, "You shall know the truth and the truth shall make you free, John 8:32.

Knowledge of His truth regarding healing sets us free and makes it possible for God to fulfill it in our lives.
Never consider symptoms that are opposing the word as grounds for doubting God's Word because it is written: "I will watch over my word to perform it."
We must keep the word [promise of healing] before our eyes and keep looking at it continually.
Do as Abraham did: Be strong in faith by looking at the promise of healing.
To say anything other than 'You shall recover'  [Mark 16:18] would be a lie from the devil and has to be treated that way. We have to stand on God's word in order for him to make it good in us.
We cannot talk contrary to God's word and get His blessings.

Our words are our standard of faith. They express what we really believe.
Our faith can never rise higher than our words. God's promises become real and living only as we confess them.
We should not allow the devil to hear any words coming out of our mouths other than speaking the Word of God nor should we think anything contrary to what God has promised in His Word.
We must hold fast  to the profession of our faith without wavering; for He is faithful that promised, Hebrews 10:23.
Jesus took on Himself all the physical consequences of our sinful nature so that He could come into our life as our physical healer and as our spiritual Savior.
The reason we can call on the Lord right now and be healed of our physical infirmities and diseases is that Jesus Christ Himself suffered all of them for us and He did it willingly.
Everyone that asks receives.  Matthew 7:8