Why is believing in Christ's coming important for Christians?

Hebrews 9:28 emphasizes that Christ will appear the second time without sin unto salvation for those who eagerly await Him. This expectation of His return gives believers a sense of peace, knowing that our future is secure in Him. The assurance of His coming encourages us to remain steadfast in faith, live righteously, and look forward to the fulfillment of His promises. It is this hope that comforts and motivates us in our Christian journey, reminding us of the ultimate glory that awaits.