Proverbs 17:22:
A merry heart doeth good like a medicine: but a broken spirit drieth the bones.
Notes on Proverbs 17:22:
This shows that there is more to healing than just the bodily part. Your emotional well-being often determines your physical well-being. (That is why God wants you to be in health even as your soul prospers – 3 John 2.) Thank God, Jesus came to heal the brokenhearted (Luke 4:18), and God declares that he comforts those who are cast down (2 Corinthians 7:6). He heals the brokenhearted, binding up their wounds (Psalm 147:3). Therefore, if you are sick because you are brokenhearted or depressed, God will heal you of the root cause as well as the resulting sickness.
This is one good reason that you should “Rejoice in the Lord always” (Philippians 4:4) and “Rejoice evermore” (1 Thessalonians 5:16). You won’t always feel like rejoicing, but the fact that you are commanded to do it proves that it is always possible to do it. By choosing to rejoice in the Lord, you open the door for the joy of the Lord to be your strength and for your merry heart to do you good like a medicine.
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