Is there an undisputed argument for the existence of God as, for instance, Avicenna's and Mulla Sadra's metaphysical argument, which state that "existence is ontologically prior to essence"?
Some of his statements need proof:
1) Complexity of existence; according to me, a thing is complex as long as you don't understand it.
2) In a sense, essence of contingents Mulla Sadra describes, nothingness can also be attributed as the existence of nothingness.
3) It requires faith to accept the necessity of Him and the properties He gave to the contingent. That God is devoid of essence requires faith to accept His existence in the first place.
4) How can you imagine a contingent without its dyads or vice versa?