Jews can't believe in another God.
NAU Mark 12:29 Jesus answered, "The foremost is, NAU John 10:30 "I and the Father are one."
There is only one YHvH. shalom b'SHEM Yah'shua HaMashiach
NAU Deuteronomy 6:4 "Hear, O Israel! YHvH is our God,
YHvH is one!
'HEAR, O ISRAEL! YHvH OUR GOD IS ONE YHvH;
NAU Mark 12:29 Jesus answered, "The foremost is,
NAU John 10:30 "I and the Father are one."
But where does it say that Jesus is that same God? Jesus says he is lesser than the Father? [Jn 14:28]; Paul says there is but one God, the Father, and one Lord Jesus Christ [1 Co 8:6] and that the head of Christ is God [1 Co 11:3].
As a Jew you can't believe in more than one God. God in Judaism doesn't have a divine Son and his spirit is just his power, not his equal.