Maybe someday you can tell me about these other things.
Baha'is believe that God was the cause of all existence.
Two other things that God is needed for is to rule and maintain all of existence.
“Baha’is believe in an almighty creator who has fashioned the universe and has made man in his own image; they believe in a non-created cause of all existence, in a single God. The word ‘God’ is a symbol for that transcendent reality by which all existence is ruled and maintained. ”
(Udo Schafer, the light that shineth in the darkness, p. 19)
Another very important thing that God is needed for is to send Messengers to humanity for guidance every 500-1000 years or so.
“Can one of sane mind ever seriously imagine that, in view of certain words the meaning of which he cannot comprehend, the portal of God’s infinite guidance can ever be closed in the face of men? Can he ever conceive for these Divine Luminaries, these resplendent Lights either a beginning or an end? What outpouring flood can compare with the stream of His all-embracing grace, and what blessing can excel the evidences of so great and pervasive a mercy?
There can be no doubt whatever that if for one moment the tide of His mercy and grace were to be withheld from the world, it would completely perish. For this reason, from the beginning that hath no beginning the portals of Divine mercy have been flung open to the face of all created things, and the clouds of Truth will continue to the end that hath no end to rain on the soil of human capacity, reality and personality their favors and bounties. Such hath been God’s method continued from everlasting to everlasting.”
Gleanings From the Writings of Bahá’u’lláh, pp. 68-69