God, Jesus, and the Holy Spirit are the Trinity. They are joined in consciousness, although they are three seperate entities. They are one being in the physical sense. They are not vengeful, do not grow angry, and are just and merciful. They will forgive any transgressions. They will send those who refuse them to Hell. They will take those who follow them, and only them, to Heaven. They are our conscience and the source of our souls. They created the universe.
Individually, God is the creator and source of miracles. He is the one who is above all.
Individually, Jesus is the savior and redeemer. He died for our sins, that we may be saved through faith.
Individually, the Holy Spirit gives us our conscience. It attempts to guide us along a path to Salvation.