How do we know that Jesus will return to establish His kingdom?

The promise of Christ's return is a cornerstone of Christian doctrine, supported by numerous scriptural references. In Luke 19, Jesus speaks of His future return as a certainty, which aligns with other passages such as Acts 1:11 and Revelation 22:12. The expectation that 'every eye will see Him' (Revelation 1:7) and that He will establish His reign on earth further emphasizes the unfulfilled aspects of His kingdom that believers eagerly await. This doctrine not only fosters hope but also encourages Christians to live in anticipation and readiness for His return.