When a person accepts the Spirit of Christ, he receives the power to become an adopted child of God. He truly shares in God’s own divine nature and in the communion of the divine Persons. He is then led by God to a new way of life. The power to become God’s child is called sanctifying grace.
All three Persons of the Holy Trinity have a part in the work of distributing grace to man. This, however, is particularly the task of God the Holy Spirit since it is a work of love, and the Holy Spirit is the personal Love of the Father and the Son. It is the Holy Spirit, the Spirit of Love, Who makes our souls holy through the gift of grace.