Which is the biggest grace of God?

For that matter whatever is happening to us, good or bad, is grace of God.

First grace is he made this universe for us.
You might think 'Fine. What I get out of it?"

Second grace is he made available all essential commodities to us, so that we can survive.
He occupied each and every particle so that the universe runs smoothly.
You say,'If he has made universe he has to run it whichever way.'

He sat in every heart to do the unpaid ob of accountant - giving payments as per deeds.'
You say 'But then we suffer too because of this action'

Next grace is he came many times to this earth and preached us what should be done. If that wasn't sufficient, he sent his men - saints to explain us the goal of the life and relationship with God.
You say we are not interested in saints and their philosophies.
What can God do then?

If some does follow the path as directed by a true saint then God relieves the soul, on complete purification of heart, of all sufferings and death and blesses him with infinite and eternal happiness. This is the biggest grace of all.

To qualify for this grace we must accept that whatever God does is a sheer grace because everything is done to make soul happy.