How do we know God's promises about heaven are true?

The certainty of God's promises about heaven is reinforced by His nature as faithful and unchanging. In Revelation 21:5, we see God's assurance that these words are 'true and faithful,' indicating that what He has ordained will surely come to pass. Throughout Scripture, God's character is consistent, and His plans are executed with perfect authority. This is based on the covenants He has made with His people, all culminating in the redemptive work of Christ, who has conquered sin and death. The anticipation of heaven serves not just as a future hope but as a present reality rooted in the character and actions of God.