God Sees Through the Heart of Every Man
He who is wise, can discern what is in the heart (Proverbs 20:5). That applies to both his own heart and that of others. The plan or intention in the heart is compared to “deep waters”. The picture indicates that one’s motives are difficult to see through. “Understanding” is needed to “draw them out”. We can get that understanding by fearing the LORD and listening to God’s Word (Hebrews 4:12-1 Chronicles :). If we do not know what one has planned, we still can get to know it through our relationship with God.
Christ is ‘a Man with understanding’. All plans of everyone’s heart are totally open for Him. He can reveal that to us when we live in fellowship with Him. In the day of judgment He will draw the plans and considerations out of each man and reveal them (1 Corinthians 4:5). Nobody needs to tell Him what is in man, for He knows that (John 2:25).
Many people do not know the deception of their own heart. They proclaim their “own loyalty” (Proverbs 20:6). The Pharisees did that in the corners of the streets (Matthew 6:2; Matthew 23:5) and even towards God (Luke 18:11-2 Kings :). And they have not died out yet. We may judge the Pharisee who openly boasts in his good qualities, but what about us? We may have a humble attitude with the intention to receive honor for it. That lies on the same level. We may not loudly boast, but we still like it when others see how devout we are.
The contrast of boasting in a certain kindness is “a trustworthy man”. That means that one who is full of himself, is not trustworthy. Such a person makes promises for all kinds of things with a lot of boasting, but does not fulfill them. A trustworthy man is not full of himself, but of the other person. He is focused on the other, he is there for the other man. But where do we find such man? The question indicates that such a person is difficult to find (cf. Proverbs 31:10; Psalms 12:1).
The good Samaritan did not shout about his kindness, but showed it. He was trustworthy. It is not about what one says he is, but about what one does.
“A righteous man” is someone who lives according to the right of God (Proverbs 20:7). His life flows from the “integrity” of his heart. That integrity is in his heart because he lives in fellowship with God. There is no deception in his actions. He who lives that way, is a blessing to his environment and in the first place to those with whom he has the closest relationship: his children. They are called “blessed” because they grow up and are raised in this atmosphere of integrity. This is the most beautiful inheritance that parents can leave to their children.
“A king” who speaks justice, discerns good from evil (Proverbs 20:8). The throne speaks of government in general, “the throne of justice” speaks of the exertion of justice. One cannot appeal against this right. Here the emphasis is on the separation from the evil. Dispersion has the meaning of the purification of something. He will do that “with his eyes”, which indicates full understanding. For him it is all about removing “all evil” from his kingdom (Psalms 101:7-Ruth :).
No king or government has ever fulfilled this ideal. The Lord Jesus will do what is written here. He will, when He sits on His throne of glory, “separate the nations from one another, like the shepherd separates the sheep from the goats” (Matthew 25:31-Jonah :). He will then send the goats to the eternal fire, while the sheep will inherit the kingdom (Matthew 25:33-1 Corinthians :). He has eyes that see and fathom everything (Psalms 11:4).
Nobody can say that he is pure in his thoughts and deeds (Proverbs 20:9). There are people who claim that they are, but they are lying (1 John 1:8; 1 John 1:10). With the rhetorical question the wise confirms that nobody is without sin (Ecclesiastes 7:20; Genesis 6:5; 1 Kings 8:46; Psalms 143:2; Romans 3:9). One can only say that he has purified his heart when he has confessed his sins, by which he may know that they are forgiven by God (1 John 1:9). Purification is not in man himself, but outside of him, in God. God can forgive on the ground of the work of His Son on the cross.
The proverb is especially meaningful for the practice. In our practice as believers we should be aware that we are weak and that we do not always know our hearts through and through. We also cannot always fully fathom our motives. Paul was aware of that. He put the judgment of his life in the hands of the Lord. He says: “For I am conscious of nothing against myself, yet I am not by this acquitted; but the one who examines me is the Lord” (1 Corinthians 4:4).