In the beginning God created the heavens and the earth … and the Spirit of God was hovering over the waters. He [Jesus] was with God in the beginning. Through him all things were made; without him nothing was made that has been made. (Genesis 1-2, John 1:2–3, NIV 1984).
“I and the Father are one. The Spirit of truth who goes out from the Father.” (John 10:30, 15:26, NIV 1984).
“The Holy Spirit, whom the Father will send in my [Jesus] name, will teach you all things and will remind you of everything I have said to you. (John 14:26, NIV 1984).
“All authority in heaven and on earth has been given to me. Therefore, go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit.” (Matthew 28:18–19, NIV 1984).
May the grace of the Lord Jesus Christ, and the love of God, and the fellowship of the Holy Spirit be with you all. (2 Corinthians 13:14, NIV 1984).
To God’s elect, strangers in the world, scattered throughout [the world], who have been chosen according to the foreknowledge of God the Father, through the sanctifying work of the Spirit, for obedience to Jesus Christ and sprinkling by his blood: Grace and peace be yours in abundance. (1 Peter 1:1–2, NIV 1984).
My Musings – One God or three? Make no mistake about it — “Hear, O Israel: The LORD our God, the LORD is one.” (Deuteronomy 6:4, NIV 1984). One is essence (the properties or attributes by means of which something can be placed in its proper class or identified as being what it is — God), existing in three persons, each possessing equally the attributes of the Almighty God. Blessed Trinity!
The One God is eternally divine, existing in three persons: Father, Son and Holy Spirit. We believe that these are equal in every distinct perfection, and they execute distinct but harmonious offices in the work of creation, providence, and redemption. (Articles of Faith, First Baptist Church of Sycamore, Church Constitution & Bylaws).
My Advice – You’ll not be able to fully grasp this, but you can trust what the Scripture says.