Parallel
John 3:33
Robinson-Pierpont Byzantine Textform · Berean Standard Bible
Ὁ λαβὼν αὐτοῦ τὴν μαρτυρίαν ἐσφράγισεν ὅτι ὁ θεὸς ἀληθής ἐστιν.
Whoever accepts His testimony has certified that God is truthful.