How do we know Jesus is a faithful high priest?

Hebrews 2:17 describes Jesus as our high priest who is merciful and faithful. This quality is important for believers because it establishes that Jesus fully understands our temptations and struggles, having suffered in every way without sinning. His faithfulness secures our reconciliation with God; it assures us that He is continually interceding on our behalf. Furthermore, Jesus' faithfulness is not hypothetical or based on His actions alone, but is grounded in His divine nature and mission, ensuring that salvation is complete and perfect.