How do we know that God's mercy is vital for salvation?

The doctrine of salvation is intrinsically linked to the concept of divine mercy. Romans 5:8 states, 'But God demonstrates His own love toward us, in that while we were still sinners, Christ died for us.' This passage illustrates that it is God's mercy, rather than our own merit, that provides the foundation for salvation. Without God's mercy, our sinful state would lead us to condemnation, but through His grace, we are offered redemption and reconciliation. This mercy allows us to plead for forgiveness, as seen in Luke 18:13, where the publican cries out for mercy, indicating that a realization of one's sinful condition leads to a desperate need for God's mercy in salvation.