“Brood of vipers! How can you, being evil, speak good things? For out of the abundance of the heart the mouth speaks. A good man out of the good treasure of his heart brings forth good things, and an evil man out of the evil treasure brings forth evil things.” — Matthew 12:34-35 (NKJV)
“But those things which proceed out of the mouth come from the heart, and they defile a man. For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies.” — Matthew 15:18-19 (NKJV)
Most people think of the hearts of mankind in these passages, but what about the heart of God? No one is good except God (Matthew 19:17). Satan and his minions are evil. Thanks to the Fall in Eden, so are we (Jeremiah 17:9). So let’s add some explanatory phrases to the first passage. “Out of the abundance of the heart [of God] the mouth speaks [Jesus Christ the Word]. [God] out of the good treasure of his heart brings forth good things.”
Jesus Christ, the Word of God (John 1:1, 14), is the essence and overflow of the Father’s heart. When he speaks, we hear God’s heart. We hear about and desire his good treasures – salvation, holiness, the fruit of the Spirit, the fear of the Lord, wisdom, knowledge, mercy, justice, grace, righteousness, forgiveness, and heaven. This treasure, this pearl of great price, is buried or hidden like Christ in death and like planted seed, so we must seek it out (Deuteronomy 33:19, Proverbs 2:4, Isaiah 45:3, Matthew 13:3-23, 44-46, John 12:24, Colossians 2:3).
Whatever God produces through the spoken word demonstrates the goodness of his heart to his creatures. God spoke the world into existence through Jesus Christ and called everything in it “good” (Genesis 1, Psalm 33:6, John 1:3, Colossians 1:16). That includes us, before the fall. We are fallen now and our sinful natures are prone to evil, but God’s creation of us is still good. He values each person from conception to death, even if they don’t choose to obey him.
Words must be tested if the heart that produces them is to be trusted. This is why the Lamb of God was slain from the foundation of the world (Revelation 13:8). God tested and tried his Word, Jesus Christ, on the cross so that we would trust his heart and obey him.
The story of the Bible is the heart of God. Its theme is the cross of Jesus Christ. “The words of the Lord are pure words, like silver tried in a furnace of earth, purified seven times” (Psalm 12:6, NKJV). Jesus Christ, the Word of God, was tried in the furnace of the cross and he shone forth like gold (Job 23:10). Christ overcame death, hell, and Satan and rose again. This is why we can trust him.
So what do we do about our deceitful and sinful hearts? How do we remove its evil treasures and words? There is only one solution. We must receive a new heart from God (Ezekiel 36:26). It has the seed of Jesus Christ the Word planted inside (Matthew 13:3-23, Colossians 3:16, James 1:21). If we let the divine treasure of this seed grow through faithful prayer, Bible study, fellowship, and evangelism – the Word preached, prayed, shared, and obeyed – then we won’t have to worry about the treasures and words of our hearts. Like God, they will be good.
“Keep your heart with all diligence, for out of it spring the issues of life” (Proverbs 4:23, NKJV). Where is your heart? What treasures do you store there (Matthew 6:21)? What words do you speak? If your heart is good, rejoice! If it is evil, ask God for a new one. He will give you what you ask for (Matthew 7:7-11) and implant the seed of Christ there. Trust God today.