…in God, the Father, Eternal & Almighty, Creator of all things. Ephesians 3:9, Genesis 1:1.
…in Jesus Christ, that He is the Son of God, in His Virgin Birth, His Deity, His Resurrection & Ascension. John 3:16, Hebrews 1:8, Acts 1:9, Matthew 28:5,6.
…in the Holy Ghost, that He is the Third Person in the Triune Godhead, and the Divine Spirit through Whom the Father & Son work. John 15:26, 14:16,17.