“This is the work of God, that ye believe on him whom he hath sent.” Those who believe in Jesus have everlasting life (cf. John 6:47). Salvation is neither gained through religion nor earned by works. Salvation is both unearned and undeserved.
The Jews had missed Jesus’ point that He alone is the Bread of Life (cf. John 6:26-27). They were only thinking about their physical needs and not their spiritual needs. Are you missing the point too? Do you think that your good works, ministry services, or prestigious title merits salvation? Those things are good, but without faith in Jesus Christ, they are like filthy rages before the Lord (Isa 64:6) (Bible, Expositor and Illuminator Union Gospel Press, Winter December 2020, January, February 2021).