Why is the concept of Christ as our guarantee important for Christians?

The concept of Christ as our surety is foundational for Christians because it provides assurance of our eternal salvation. As stated in Hebrews 7:25, He is able to save completely those who come to God through Him, since He lives to intercede for them. This means that our salvation does not depend on our works or failures but on His unchanging faithfulness and perfect sacrifice. The assurance that Jesus, as our surety, guarantees our deliverance emphasizes the security and permanence of our relationship with God, freeing believers from fear of losing their salvation.