God does not like lips that lie. That might be because the ultimate adversary He has is called a liar and the father of lies. It also might be because God speaks truth without any mixture of error any time He speaks. God is absolutely opposed to lying, liars, and any form of deception. He says in this proverb that he sees lying as an abominable act. The devil believed and held to, and eventually stated a lie when he fell from heaven. Since that time the adversary of God and our souls has attempted to build his own kingdom, one based upon lies and deceit. These lies oppose God and all that He is. That is why God finds ALL lying abominable. Every lie is a damning thing, for it was the lie that brought our condemnation, and it is a lie that condemns anew every moment of every day. Embrace a lie and you are embracing the devil and his program to bring you into the judgment of God.
God delights in the faithful. It is because of God's faithfulness that we are saved. It is because of how God held to the truth, even when it meant having to condemn His own Son for becoming the sin-bearer for mankind. Being a faithful one means holding fast to God's truth, which is THE truth. God delights in those who deal faithfully, because they are embracing His own character. Think about it for a moment. The devil lies to us wanting to get us to believe his lies so that we turn from God and His Word. We trust the devil because he promises us happiness and pleasure. The problem is that in the end his promises don't include the "fine print" of the judgment that awaits - along with the heartbreak and death that always come with sin. Godly, wise men deal faithfully because they know God's truth and they carry within them God's character in the person of the Holy Spirit. Therefore they live for the truth as well as live it out daily.
Wisdom is living out the truth. It is being faithful to God. It is speaking faithful promises. And ultimately it is sharing the ultimate faithfulness of God shown to us in the gospel. This is the life in which God delights. Wisdom is loving that life, living that life, and being an example of His faithfulness.