Why is having one mediator important for salvation?

1 Timothy 2:5 establishes there is one mediator between God and man, the man Christ Jesus. This is vital because humanity is in conflict with God due to sin, and only a mediator who is both divine and human can bridge this gap. The Lord Jesus, as the God-man, satisfies divine justice while providing the necessary righteousness for sinful humanity. Without this unique mediator, there would be no hope for reconciliation or salvation. Thus, the singularity of Christ in mediating our salvation is foundational to sovereign grace theology.