What is the only thing stopping someone from being dropped into the pit of hell at any moment?

In Jonathon Edwards'
sermon "" there is only one thing which he states keeps a person from being dropped
into the pit of hell at any moment.

Reminding his parishioners the God is the
one who holds each and every person over the pits of hell, Edwards states that it is God, alone,
who can keep mankind safe. Edwards states that God looks upon mankind as being worth nothing.
Thisused to detail God's hold on man is demeaning:

The
God that holds...