What does Edwards mean when he says that sinners hang by a slender thread?

When Jonathan Edwards says that sinners hang by a slender thread, he is emphasizing the precariousness of their situation in relation to divine judgment. This metaphor illustrates that individuals are in constant danger of falling into eternal damnation, much like someone dangling over a chasm by a fragile thread. It underscores the idea that without God's mercy and intervention, sinners are vulnerable and powerless, highlighting the urgency of repentance and the need for salvation.