“Likewise the Spirit also helpeth our infirmities; for we know not what we should pray for as we ought but the Spirit itself (Himself) maketh intercession for us with groanings which cannot be uttered.”  (Romans 8:26)

Here Paul describes how the Holy Spirit makes life in our bodies.  The word “helpeth” means to “take hold together with, against”

The Word is saying that the Spirit will take hold together with us and fight against our infirmities. 

The word “infirmities” means sickness, disease, and weaknesses. 

The Holy Spirit will make LIFE, to work against the sicknesses, diseases and weaknesses that plague our bodies, if WE take hold together with Him. 

He will make health, instead of sickness, strength instead of weakness, and life instead of death. 

But we must do our part!  How do we do this? We do this by abiding in His Word. 

In John 8:31-32 Jesus said to those who believe; “. . . If  ye continue in my word than you are my disciples indeed.  And you will know the truth, and the truth will make you free.” 

Now according to John 14:17 the Holy Spirit IS the "Spirit of Truth."
Therefore we can conclude that the Spirit of truth, will make us FREE from sickness and disease if we take hold together with Him through His Word.