God is the Father of his own spiritual body. Few doubt this.

God is the Father of his own human body. Many millions doubt this.

God became Jesus the Son in human form.
Jesus became God by hypostatic union of Spirit & flesh.
Jesus as the Son is the human side of God.
Jesus as God is the Divine side of God.

Jesus is the Father in the Son.(John 14:10)
Jesus is Emmanuel, God with us. (Mat 1:23). God here is the Father.
Jesus is the Lord, there is only one Lord (Deu 6:4, Zech 14:9, Eph 4:5).
Jesus born of Mary is called the Son of God (Luke 1:35) .
There are not two Gods or two persons (Isaiah 45:22).
There is one God and one human person (1Cor 12:13, Eph 2:16, Eph 4:4).

Jesus and the Father are one person and one God (John 14:9).

If Jesus and the Father are not one God, then there are two Gods.

Jesus in his flesh is the Son of God (Rom 1:4, 2Cor 5:16)..
The flesh is subject to God (Heb 5:6-7).
The flesh is not God because the eternal God cannot die (Deu 33:27).
The flesh is the temple of God (Eph 3:17, 1Cor 3:16, 2Cor 6:16).
God dwells in Jesus as his Temple (2Cor 5:19). The tabernacle and temple belong to one God.
The whole temple of Jesus body belongs to one God.
If the temple-body of Jesus has more than one God in it, then his body is not the temple of the true God.

 

***Hypostatic is the union of flesh and soul in a human being so that they are one forever once united at birth.  In Jesus, the hypostatic union is between the flesh and the Father so that they also are one forever.