I responded to this in Don DeGraaf's post & just repeat briefly:
As far as _knowing_ is concerned, I reply simply that science works. We
can understand the "great majority" (99.99...%) of things that happen in
the world in terms of natural processes obeying rational laws. If we
believe that God is doing these things, we must understand the divine
action somehow to be in/with/through those processes.
This is the way traditional doctrines of providence have spoken
of God's actions in the world, & that view is strongly suggested by the
theology of the cross.
George