Hear o Israel, the Lord our God is one. In Hebrew, 2 of a kind is singular. 3 of a kind is plural. If the Holy Spirit is the mind of God and not a person (2 Corinthians 2), Paul's letters start out with God the Father and Jesus Christ the Lord, First John says Father and Son are God (1 John 5:7 Father Son and Holy Spirit is not in the earliest manuscripts). The Holy Spirit is the mind of God given to the Son. The archetypes of firstborn sons who were chosen highlighted chosen because they were born last (Shem, Abram, Isaac, Jacob, Joseph (well Benjamin was last), Ephraim. Luke 9:35 This is my chosen Son (in the earliest manuscripts). Matthew and Mark account of what God said "this is my beloved Son," fits the pattern of Genesis 20, Isaac is the Abraham's beloved son , beloved son, only son. Abram's first son was Ishmael. Abraham's first son was Isaac. The advocate is Jesus with the mind of God (1 John 2:1). Compare to the Advocate in John (The Father will send another in My Name. The way Paul proved Jesus in the old testament Lord God of hosts and Lord of hosts and the Holy One of Israel points to Father , Son and Holy Spirit. Paul refrains from calling Jesus as God. Paul calls Jesus Lord and Christ and the Father as God. John calls Father and Son as God in First John.