Proverbs 14:30 A sound heart is the life of the flesh: but envy the rottenness of the bones. 

‘A sound heart is the life of the flesh: but envy the rottenness of the bones.’ A strong heart has good blood circulation, producing health and longevity; but envy, jealousy, and passionate hatred produce corruption. This also leads to various bone diseases and is a cause of many curses in one’s life that entertain envy, jealousy and hatred.  Forgiving others and oneself for sins and wrongdoings is as necessary as breathing is to life. To live with a sound heart IS life to the flesh.

From 3John 1:2 we see the apostle utter a blessing for us to prosper and be in health, as our souls prosper. 

One of the blessings that are God’s will for His children is physical healing and health (3Jn. 1:2; Ex. 15:26; Ps. 91:1-16; 103:3; Isa. 53:4-5; 58:8; Matt. 8:17; 1Pet. 2:24; Jas. 5:14).

Two things the sick are to do (Jas. 5:14-15): Call an elder [an individual who has been saved, tested and tried] to anoint him; and confess sin if it has been committed.

Four things an elder must do for the sick: Pray over them (Jas. 5:14). Anoint the sick with oil. Invoke the name of the Lord. Pray the prayer of faith (Jas. 5:15).