How do we know that the promise of being with Christ is true?

The truth of being with Christ in heaven is grounded in the teachings of Jesus and affirmed through the writings of His apostles. In John 14:3, Jesus assures us, 'And if I go and prepare a place for you, I will come again and receive you unto myself; that where I am, there you may be also.' This promise is backed by the authority of Christ, who is the truth. Additionally, Paul emphasizes in 2 Corinthians 5 that these are certainties that should provide us with confidence in our faith. The promises of God are absolute and trustworthy; they are 'yea and amen' in Christ.