What gives the communion the healing power is your faith that mixes with the reality in the spirit. Whatever you are using as the physical element (to represent the body and the blood of Jesus) is immaterial, but when you add your faith, it becomes a force and a power that nothing can resist. If none of the 3 million plus people that God brought out of Egypt was sickly or weak for one night, then a miracle took place in their physical bodies by partaking of the Passover which is a shadow of the Holy Communion. What do you think the reality will be like now that Jesus had died and the reality has been officially inaugurated?
In Isaiah 53, the Bible says, “…with his stripes we are healed.” He didn’t say you ‘were’, but He said you are healed, looking forward to the cross. In 1 Peter 2:24, “Who his own self bare our sins in his own body on the tree, that we, being dead to sins, should live unto righteousness: by whose stripes ye were healed” It says you were healed, looking back to the cross. That is where you see the difference between the Old Testament and the New Testament.
Sometimes ago, I was praying for people for safe journey and the Lord said to me, “Tell them that they had arrived back safely before they came.” Your success was settled before you applied for the exam. After the cross, it became past tense. Even though your beginning was small, in the Old Testament, but now your latter end has already increased. Your future is already greater than your past. The cross has taken place; it is impossible for you to be lesser than what you are now.