If a Man is One, and God is Infinity; then One divided-by Infinity is equal to zero.
For a Man to make a significant difference to divine creation, God must be finite - some unknown but finite proportion of times greater than Man - call it "n"; where n is a very, very, VERY large number... but not infinite.
Thus One divided-bt n is.... greater-than Zero.
That is; if God is finite; Man's potential contribution is some-thing; rather than no-thing (if God were infinite)
Some-thing is potentially significant; like the contribution of one Man in a world war. A single act of a single person may make a difference in war - whether locally (e.g. saving a life, or killing somebody); or on a large scale, where single decisions by a person may have vast consequences.
In conclusion; someone who insists on the infinitude of God is also implicitly asserting that a Man, or any number of Men, cannot have any role to play in divine creation: because the finite cannot add anything, nor subtract anything, from that which is infinite.
NOTE: The above formulation is, like any comprehensible statement of this mortal life, an abstracted model of reality; whose applicability is strictly unknowable. I put it forward as a way to understand why it is so vitally important that Christians do not (yet again, as So Many before) fall into the enticing trap of asserting and insisting that God the Creator is abstractly-infinite - e.g. that God is omniscient, omnipotent or any such. To do so always has anti-Christian implications that have historically (and here-and-now) made Christianity incoherent - thus needing theology to resort to mystery, authority-mongering, sheer power/ awe/ fear, word-hypnotism or the like.
