While, Matthew 18:20 is true generally, the context concerns mainly the official work of the church in dealing with the offending member and not with ending all sickness. Let’s read the passage:
Dealing with a Sinning Brother
15 “Moreover if your brother sins against you, go and tell him his fault between you and him alone. If he hears you, you have gained your brother. 16 But if he will not hear, take with you one or two more, that ‘by the mouth of two or three witnesses every word may be established.’ 17 And if he refuses to hear them, tell it to the church. But if he refuses even to hear the church, let him be to you like a heathen and a tax collector. 18 “Assuredly, I say to you, whatever you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven.
19 “Again I say to you that if two of you agree on earth concerning anything that they ask, it will be done for them by My Father in heaven. 20 For where two or three are gathered together in My name, I am there in the midst of them.”Matthew 18:15-20:
God’s will regarding healing
Although sickness is the direct result of human’ s rebellion against God, it is still God’s will today to heal people. Certainly, Jesus spent more time healing than teaching. “Jesus went about all Galilee, teaching in their synagogues, preaching the gospel of the kingdom, and healing all kinds of sickness and all kinds of disease among the people” (Matthew 4:23). Also, He healed all that came to Him “… And great multitudes followed Him, and He healed them all” (Matthew 12:15; Luke 4:40; Luke 6:19).
Further, Jesus’ will for us today has not changed (Hebrews 13:8). Isaiah prophesied, “by His stripes we are healed” (Isaiah 53:5). And David wrote, “Bless the Lord, O my soul… Who heals all your diseases” (Psalm 103:3).
Healing is conditional
Firstly-Having faith in God. “Therefore I say to you, whatever things you ask when you pray, believe that you receive them, and you will have them” (Mark 11:24). To those seeking healing from sickness, Jesus said, “your faith has made you well” (Matthew 9:22).
Secondly-Being obedient to God’s Moral and health laws. “if you diligently obey the voice of the Lord your God, to observe carefully all His commandments… all these blessings shall come upon you.” “But …if you do not obey the voice of the Lord your God, to observe carefully all His commandments and His statutes, that all these curses will come upon you.” “He will bring back on you all the diseases of Egypt, of which you were afraid” (Deuteronomy 28:1-61).
Therefore, all those that have fulfilled these conditions can seek healing from sickness. For the Bible states, “Is anyone among you sick? Let him call for the elders of the church, and let them pray over him, anointing him with oil in the name of the Lord. And the prayer of faith will save the sick, and the Lord will raise him up. And if he has committed sins, he will be forgiven” (James 5:14, 15). Also, those that seek healing should always add to their prayers “Your will be done” (Luke 11:2; 22:42).
In His service,