1 John 4:15

Ὃς ἂν ὁμολογήσῃ ὅτι Ἰησοῦς ἐστὶν ὁ υἱὸς τοῦ Θεοῦ, ὁ Θεὸς ἐν αὐτῷ μένει, καὶ αὐτὸς ἐν τῷ Θεῷ.

Os an omologēsē oti Iēsoys estin o yios toy Theoy, o Theos en aytō menei, kai aytos en tō Theō.

King James Version (KJV)

Whosoever shall confess that Jesus is the Son of God, God dwelleth in him, and he in God.

Modern English

If anyone acknowledges that Jesus is the Son of God, God lives in them and they in God.