In regards to the unity of the Trinity, God is one in substance, nature, and essence. This indicates that He is supremely perfect and does not lack anything. Unlike God, who is pure act, human beings have act and potency because they are not perfect. They have the capacity to become better by practice or virtue, whereas God is supremely good. Saint Thomas Aquinas argues that there can only be one who is supremely perfect because God’s existence is His essence. This suggests that every other species’ existence depends on God because He is caused by no other and adds existence to every being. Therefore, God is one because He is perfect in His nature and He is the first efficient …show more content…
He promised to send human beings another, known as the Holy Spirit and third person of the Trinity. The mission of the Holy Spirit is to advocate for mankind and draw human beings closer to Christ and the entire Trinity. The Holy Spirit also guides the faithful, participants of the Church, to a new life of obedience to God. This is done by the breath of God, in which the Holy Spirit falls upon or is given to man and enlivens him through the first sacrament of baptism. Man is made in the image of God but cannot image Him fully due to being in a fallen state of sin. The Holy Spirit offers a renewal of God’s divine image by restoring human beings in a state of glory. This is accomplished by offering His presence on man and making man new. Human beings are also made new by the gifts of the Holy Spirit, which enables them to live an obedient life, thus being redirected to the