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דניאל יוסף בן מאיר הירש
No, I'm referring to Moses' argument for retaining the Jewish people as God's nation after the sin of the Golden calf. The argument is that God's reputation would be tarnished among the other nations if God destroyed the Jewish people and started a new nation. The implication is that God's reputation is highly valued. If God had no needs then God's reputation would not have been a strong argument.Are you referring to the "Your god is a jealous god" ?
I take that to mean that ascribing partners to G-d is unforgivable.
Yet this has nothing to do with the needs of G-d, and everything to do with the needs of mankind.
By ascribing partners to G-d, we can make up more or less anything we like.
Regarding partners with God, it is a Jewish idea that people are partners with God when we reveal the holiness hidden in the material world.