How do we know God's long-suffering is for our salvation?

The Apostle Peter teaches that the long-suffering of God should be accounted as salvation. This means that God's patience with a fallen world stems from His desire to save His elect. In 2 Peter 3:9, it's clear that God is not willing that any of His chosen should perish but desires all to come to repentance. The world may seem to continue in sin, but this forbearance is actually an opportunity for God's elect to be saved before the final judgment. His long-suffering serves to fulfill His purpose of grace towards His chosen ones, illustrating His unmatched mercy and love.