Jesus Christ is the same yesterday, today and forever (Heb 13:8) If God heals yesterday, He heals today. (Exodus 15:26)

It is God's intention that the body of Christ remains healthy both physically and mentally. Prevention from sickness is God's will for us.

For many diseases where the causes are not physical but psychosomatic, there are spiritual root causes including under the curse of sin. (Psalms 38:3, John 5:14)

When a person sins without confession and repentance, he predisposes himself to demonic influences through ungodly thoughts, giving rise to the establishment of strongholds (2 Cor 10:4) such as ungodly belief and value system.

In turn, these strongholds, through the mind-body connection affect the physical well being of that person. (Psalm 38)

The state of the mind is a reflection of the state of the soul and of the spirit man. (Prov 23:7)

Healing, sustenance of health and prevention of sickness comes form the holistic sanctification of spirit, soul and body (1Thess 5:23) including the transformation of the soul and renewal of the mind to God's ways. (Romans 12:2)

The atonement sacrifice of Christ at Calvary has given us the right to be free form the curse of sin (Isaiah 53:4-6) and this freedom is achieved by appropriation through sanctification.

Sanctification can be achieved through having a proper relation with God by being obedient to His Word especially the Great Commandments. (Mark 12:30-31)

In accordance to Mark 16:17, Jesus Christ has given the full power of attorney to believer to cast out demons and heal the sick.

Being in good health is not the end in itself but is a means to make us predisposed to serve the Kingdom more effectively. (2 Tim2:21)