Proverbs 4:20-22:

My son, attend to my words; incline thine ear unto my sayings.
Let them not depart from thine eyes; keep them in the midst of thine heart.
For they are life unto those that find them, and health to all their flesh.

Notes on Proverbs 4:20-22:

Having an ear to hear the Word of God will keep you healthy!

The Hebrew word translated health in verse 22 is also translated cure, healing and remedy in other Old Testament verses.  It clearly refers to physical health.  You can be sure of this without a concordance or any knowledge of Hebrew by the simple fact that this health is “to all your flesh.”

See also:

Notes on Psalm 107:17-20
Healing and Giving
Different Ways to Get Healed
Bodily Exercise Profiteth Little
Healing Is Not a Formula
God’s Word Is Medicine
Some of God’s Promises Have Conditions
Why Some People Will Never Get Healed
Crossing the Bridge from Head Knowledge to Revelation Knowledge
Because Healing Is 100% by Grace, Can I Live Any Old Way and Still Get Healed?
Is It Unbelief to Check Yourself to See if You Are Healed Yet?
Should I Use Meditation to Be Healthier?
Objection: Paul Told Timothy to Drink Wine Instead of Believing God for Healing
Objection: Getting “Healed by Faith” Is Too Difficult
Objection: If Proverbs 18:21 Meant What Faith Preachers Say It Does, Old Testament People Could Have Gone Around Speaking Health to the Sick and Death to Cancer and Other Diseases Before Jesus Came
Objection: Like Any Loving Parent, God Sometimes Has to Tell His Children NO for Their Own Good
Condition: Anything Else Not Listed Here