But violence covers the mouth of the wicked." Proverbs 10:6
Upon first glance, this contrast seemed odd to me. On top of the head and covering the mouth didn't seem like direct opposites to me. But I wonder if the Proverb is pointing at the origins.
Blessings seem to be coming from without (outside) the person. "It is like the precious oil upon the head" (Psalm 133). In ancient Israel, special anointing oil was poured on top of the head of the new priest or new king. It must have been poured in abundance, because the Psalms speaks of how the oil drips down like the dew on the mountains. David says that it is God who does this for him - "You anoint my head with oil" (Psalm 23:5).
In contrast, violence seems to come from within, because what comes from the mouth has originated from within. As Jesus says, "out of the abundance of the heart his mouth speaks" (Luke 6:45). The wickedness of evil people comes from within. God encouraged His people, "Cast away from you all the transgressions which you have committed, and get yourselves a new heart and a new spirit" (Ezekiel 18:31)
Where do we get a new heart and a new spirit? Is it something that we're to conjure up within ourselves? No, they actually come from outside - from God. Again in Ezekiel, God promised, "I will give you a new heart and put a new spirit within you" (Ezekiel 36:26). The new heart would come from Him. Jesus teaches about this in John chapter 14 and after His resurrection tells his disciples, "Behold, I send the Promise of My Father upon you" (Luke 24:49). Acts chapter two records how God sent the Holy Spirit after Jesus had ascended into heaven. The Spirit came down upon the disciples like tongues of fire. A precious anointing raining down like oil upon the head.
Praise the Lord for His mercy and His goodness, which He gives so graciously to the sons of men!