Why do we need a mediator between us and God?

A mediator is fundamentally necessary because of the gap caused by sin between a holy God and sinful humanity. Throughout the Scriptures, it is demonstrated that sinful beings cannot stand in the presence of God without a representative. Hebrews explains that Christ serves as our high priest, the ultimate mediator, who fulfills the role by offering Himself as a perfect sacrifice for our sins. Only through this mediation can we receive forgiveness and reconciliation with God, as described in 1 Timothy 2:5, which states that there is one God and one mediator between God and men, the man Christ Jesus.