Proverbs 6:19 (ESV)
a false witness who breathes out lies,
and one who sows discord among brothers.
In this section Solomon is continuing his description of the things God hates. Here in this proverb we see two a more statements as to what God hates. It is not surprise that the God of all Truth would hate lies. Jesus is said to be the Way, the Truth and the Life. We need to take stock of this thought. When we lie we are acting contrary to the very nature of God. Speaking untruth is the same as speaking against God. But, lying is not the only thing listed in this proverb that brings God's hatred. He also hates it when someone in the Body of Christ stirs up strife in the Body of Christ. Lying is one thing, but it is quite another to bring others down with you. Stirring up strife among otherwise brothers is a thing hated by God. God is a triune God in complete harmony within that Godhead. So, when we stir up strife among brothers we, again, do something contrary to God's nature. God wants us to reflect His nature not rebel against it. Speak the truth and strive for harmony. That is the character of God.