The Holy Spirit

“When the Holy Spirit takes possession of a heart, a change comes about. If before there was a ‘secret rancor against God’ in the depths of a man’s heart now the Spirit comes to him from God and attests that God is truly favorable and benign, that He is his ally and not his enemy. He opens his eyes to all that God has been capable of doing for him and to the fact that He did not spare his only Son for him. The Spirit puts ‘God’s love’ into man’s heart (see Rom 5:5). In this way He makes him a new man who loves God and who willingly does what God asks of him. God, in fact, no longer limits Himself to telling man what he should do or not do, but He Himself does it with him and in him. The new law, the Spirit, is much more than an indication of a will; it is an action, a living and active principle. The new law is new life. That is why it is more often called grace than law: ‘You are not under law but under grace’ (Rom 6:14).”
~Raniero Cantalamessa