Convenient. It can not, nor will it ever be answered by the mind of man, so "a later time" equates to eternity.
Perhaps it is all as simple as each particle's instantaneous verification with the Will of God. It is an explanation that will remain no further from the truth as any other untestable explanation conceived of by man. It appears there are limits to what we are allowed to know.
To human eyes, too much of light
Is blinding as the blackest night.
And this is so, too, of the mind,
In total ignorance it's blind.
But more truth than it can absorb
Will overwhelm the mental orb.
So, lest our vision burn to ashes
God shows us truth in bits and flashes,
White revelations that the brain
Can comprehend and yet stay sane.
And we, poor fools, demand truth's noon
Who scarce can bear its crescent moon.
-- "White Revelations," by Georgia Starbuck Galbraith.
Parsimony in one's assumptions is a not unworthy aim...