How do we know eternal life through Christ is true?

In John 6:27, Jesus emphasizes the importance of seeking 'the food that remains to eternal life.' This claim underscores the truth that through Him, believers receive lasting spiritual sustenance that transcends earthly needs. The assurance of eternal life is further corroborated by His commission from God the Father, who has 'put His seal of approval on Him.' This divine endorsement strengthens our confidence in the reality of eternal life as a gift from Christ to all who diligently seek it, reminding us of the necessity of focusing on spiritual over temporal concerns, as cautioned by Jesus.