He that hath received his testimony hath set to his seal that God is true.
Berean Study Bible (BSB) - John 3:33 >Whoever accepts His testimony has certified that God is truthful.
Textus Receptus (TR) - John 3:33 >Ὁ λαβὼν αὐτοῦ τὴν μαρτυρίαν ἐσφράγισεν ὅτι ὁ Θεὸς ἀληθής ἐστιν.