Our life is a reflection of what fills our heart. Good in is good out, and garbage in is garbage out. We determine what fills the heart. Solomon said, “Watch over your heart with all diligence, for from it flow the springs of life” (Pro 4:23). Other translations read: “Above all else, guard your heart, for everything you do flows from it” (Pro 4:23 NIV), and “Guard your heart above all else, for it determines the course of your life” (Pro 4:23 NLT). The Hebrew concept of the heart (לֵב leb) is the total inner person; it includes the mind, the will, and emotions. It is the base of operations which determines the course of life. I believe Solomon is here talking to believers, for the heart of the unbeliever is bent only on sin (Jer 17:9; Gen 6:5; 8:21; Psa 53:1; Matt 15:19).
The text assumes that one can and should control that upon which his mind dwells. Evil thoughts must be barred or expelled. The “issues of life” are the impulses, the choices, the decisions that affect the nature of man’s existence in this world. If the heart is pure, the life will be pure. Conversely, if the heart is corrupt, the life will be corrupt. In Hebrew psychology the heart is the center of moral consciousness and the seat of the affections.
All we say and do flows out of the heart. This is true both for the righteous and the wicked. David wrote, “The mouth of the righteous utters wisdom, and his tongue speaks justice. The law of his God is in his heart; his steps do not slip” (Psa 37:30-31). But this is not so with the wicked, for “sin whispers to the wicked, deep within their hearts” (Psa 36:1 NLT). Jesus captured both ideas when He said, “The good man out of the good treasure of his heart brings forth what is good; and the evil man out of the evil treasure brings forth what is evil; for his mouth speaks from that which fills his heart” (Luke 6:45).
To find and keep good mental health, I carefully select the literature I read, the music I listen to, the TV shows I watch, the conversations I engage in and the friends who will help advance me spiritually in my walk with the Lord. The condition of my heart is paramount, for what I sow is what I will reap, and this determines the outcome and quality of my life. “There is not a more portentous predictor of your ultimate end than what you expose your heart to. Above all else, guard your heart!”
Dr. Steven R. Cook
- Learning to Live by Faith
- Biblical Meditation
- Rejoice, Pray, and Give Thanks
- No Distractions
- Choosing the Faithful Way
- Bible Promises that Strengthen our Faith
- Walking with God
- Living in Babylon
- A Biblical Worldview
- You Fight Like you Train
 Unless otherwise noted, all Scripture references are from the New American Standard Bible, 1995.
 James E. Smith, The Wisdom Literature and Psalms, Old Testament Survey Series (Joplin, MO: College Press Pub. Co., 1996), 499–500.
 John A. Kitchen, Proverbs: A Mentor Commentary, Mentor Commentaries (Fearn, Ross-shire, Great Britain: Mentor, 2006), 113.