How do we know Jesus' claims about eternal life are true?

The truth of Jesus' claims regarding eternal life is substantiated by His resurrection and the witness of scripture. His statement that 'whoso eateth my flesh and drinketh my blood hath eternal life' (John 6:54) highlights a profound truth. Believers’ eternal life is rooted not in their own merits but in partaking in the life, death, and resurrection of Jesus Christ. Furthermore, the Apostle Paul emphasizes that our hope is secured by what Christ accomplished on Calvary, signifying that it is His righteousness, not our own, that validates our eternal life.