Jesus answered and said unto them, This is the work of God, that ye believe on him whom he hath sent.
Berean Study Bible (BSB) - John 6:29 >Jesus replied, “The work of God is this: to believe in the One He has sent.”
Textus Receptus (TR) - John 6:29 >Ἀπεκρίθη ὁ Ἰησοῦς καὶ εἶπεν αὐτοῖς, Τοῦτό ἐστι τὸ ἔργον τοῦ Θεοῦ, ἵνα πιστεύσητε εἰς ὃν ἀπέστειλεν ἐκεῖνος.