Fiji's Family Network
"Joe instead of trying to cure it you can prevent sickness."
You know very well we live in a fallen world corrupted by sin. Some people are born with a degenerative disease, deformity and or disability. Sometimes the only cure is medication or surgery as a form of treatment for those ailments.
You cant prevent every sickness or condition.
What you're advocating is very dangerous and some have been prosecuted by law enforcement agencies for denying their loved ones medical treatment resulting in deaths because of their extreme/radical religious beliefs.
Here's an excerpt from a WCG article:
"In 1988, Tkach made minor doctrinal changes. He taught that it was permissible for members to go to doctors, take medicines, observe birthdays and wear cosmetics.
A few additional doctrines were changed later in 1995: The church officially rejected the doctrine that the Anglo-Saxons descended from the tribes of Israel, and the church permitted the observance of holidays such as Christmas and Easter.
The Sabbath doctrine was changed in order to be more biblical; the result was that members became more spiritual. Members focused more on their relationship with Jesus Christ; they also had an increased interest in worship. Organizationally, the doctrinal changes had catastrophic results. But spiritually, they were the best thing that ever happened to us." 
 Sourced from: https://www.gci.org/aboutus/history
The good news of the GOSPEL is that Jesus died on the cross at Calvary to free sinners from the enslavement of sin. That’s what we’re offering and that’s what Jesus offered as well.
8 But God commendeth his love toward us, in that, while we were yet sinners, Christ died for us. (KJV)
People don’t have to obey a set of rules to be included into God’s Kingdom. It’s come as you are and simply receive by faith what God did through His Son Jesus on Calvary’s cross. The rewards are out of this world to say the least:
By the blood of Jesus:
1. We receive the remission (forgiveness) of our sins
Matthew 26:28 For this is My blood of the new covenant, which is shed for many for the remission of sins. (NKJV)
2. We are completely washed of our sins
Revelation 1:5 and from Jesus Christ, the faithful witness, the firstborn from the dead, and the ruler over the kings of the earth. To Him who loved us and washed us from our sins in His own blood, (NKJV)
3. We are redeemed
Ephesians 1:7 In Him we have redemption through His blood, the forgiveness of sins, according to the riches of His grace (NKJV)
Colossians 1:14 in whom we have redemption through His blood, the forgiveness of sins. (NKJV)
4. We are justified—regarded as innocent—before God
Romans 5:9 Much more then, having now been justified by His blood, we shall be saved from wrath through Him. (NKJV)
5. We are brought near to God
Ephesians 2:13 But now in Christ Jesus you who once were far off have been brought near by the blood of Christ. (NKJV)
6. We have peace with God
Colossians 1:20 and by Him to reconcile all things to Himself, by Him, whether things on earth or things in heaven, having made peace through the blood of His cross. (NKJV)
7. We are cleansed in our consciences
Hebrews 9:14 how much more shall the blood of Christ, who through the eternal Spirit offered Himself without spot to God, cleanse your conscience from dead works to serve the living God? (NKJV)
8. We are made holy and set apart for God
Hebrews 13:12 Therefore Jesus also, that He might sanctify the people with His own blood, suffered outside the gate. (NKJV)
9. We can have new boldness to approach God and ask for his help
Hebrews 10:19 Therefore, brethren, having boldness to enter the Holiest by the blood of Jesus, (NKJV)
10. We can have ongoing cleansing from sin
1 John 1:7 But if we walk in the light as He is in the light, we have fellowship with one another, and the blood of Jesus Christ His Son cleanses us from all sin. (NKJV)
11. We can overcome the enemy
Revelation 12:11 And they overcame him by the blood of the Lamb and by the word of their testimony, and they did not love their lives to the death. (NKJV) 
 Author unknown
The previous Pope Benedict XVI while preaching on the Olivet discourse on Sunday 11/18/2012 in St. Peter’s Square said that Jesus is not going to return to this earth for His Second coming to signify the end of this era.
Below is the except from that preaching by the leader of the Christian World.
The Pope on The Coming of the son of Man
Jesus speaks of a future that is beyond our categories, and because of this Jesus uses images and words taken from the Old Testament, but, importantly, he inserts a new center, namely, himself, the mystery of his person and his death and resurrection. Today’s passage too opens with some cosmic images of an apocalyptic nature: “The sun will be darkened, the moon will no longer give its light, the stars will fall from the sky and the powers in the skies will be shaken” (Mark 13:24-25); but this element is relativized by what follows: “Then the Son of Man will come upon the clouds in the sky with great power and glory” (13:26). The “Son of Man” is Jesus himself, who links the present with the future; the ancient words of the prophets have finally found a center in the person of the Messiah of Nazareth: he is the central event that, in the midst of the troubles of the world, remains the firm and stable point.
Another passage from today’s Gospel confirms. Jesus says: “The sky and the earth will pass away but my words will not pass away” (13:31). In fact, we know that in the Bible the word of God is at the origin of creation: all creatures, starting with the cosmic elements – sun, moon, sky – obey God’s Word, they exist insofar as they are “called” by it. This creative power of the divine Word (“Parola”) is concentrated in Jesus Christ, the Word (“Verbo”) made flesh, and also passes through his human words, which are the true “sky” that orients the thought and path of man on earth. For this reason Jesus does not describe the end of the world and when he uses apocalyptic images he does not conduct himself like a “visionary.” On the contrary, he wants to take away the curiosity of his disciples in every age about dates and predictions and wishes instead to give them a key to a deep, essential reading, and above all to indicate the right path to take, today and tomorrow, to enter into eternal life. Everything passes – the Lord tells us – but God’s Word does not change, and before this Word each of us is responsible for his conduct. It is on this basis that we will be judged.
Pope Benedict XVI “On the Coming of the Son of Man”
Be warned, the pope is preaching a false Gospel that leads to damnation.