When the Holy Ghost came on the day of Pentecost, 120 disciples were filled (including Mary, the mother of Jesus) and began to speak with tongues as the SPIRIT gave them utterance. Acts 2:4. Peter preached that the Holy Ghost was the Spirit of God. As he used the prophecy of Joel 2:28, he said, “It shall come to pass in the last days, saith God, I will pour out of MY SPIRIT
(singular … not my Spirits -plural)
UPON ALL FLESH…” Acts 2:17.
Paul used the terms “Spirit of God” and “Spirit of Christ” as synonymous terms in reference to the Holy Spirit.
He said, “Ye are not in the flesh, but in the Spirit, if so be that the SPIRIT OF GOD dwell in you.
Now if any man have not the SPIRIT OF CHRIST, he is none of His.” Romans 8:9. There is only one Spirit of Deity. (Also see Colossians 1:27 and Galatians 4:6.)
There is ONE GOD and Father of all, who is above all, and through all, and IN YOU ALL. Ephesians 4:6. There is only ONE GOD manifested in the flesh and received in the hearts of believers today … and His name is JESUS