Here is a direct translation from Hebrew:Come to me, listen likewise, from the first secret spoken the time took was there I and now the Lord God has sent and His Spirit

This is the man Jesus telling us, that in the beginning, the SoulOfGod (Word - authority) and the SpiritOfGod (HolySpirit - power) determined that I would manifest them in the flesh.

Remember, Joh 1:1 tells us that the Word and Spirit are 1 God.

The SpiritOfGod is the Father of Christ Jesus. So, the HolySpirit is Father.

Breaking this down to even simpler terminology:

In the beginning it was determined that the authority of our God and the power of our God was to be poured into the body of our God who is known as Jesus.

This verse does not support trinitarianism.

There is One God who is SpiritSoulAndBody just as man is who was created in His image and that God is the LordJesusChrist.

The next verse clarifies any misunderstanding about the nature of our One God.