1 John 5:20

20We knowοἴδαμενnowδὲthatὅτιtheὁSonυἱὸςτοῦof Godθεοῦis comeἥκει,andκαὶhas givenδέδωκενusἡμῖνunderstandingδιάνοιανso thatἵναwe may knowγινώσκωμενHim who [is]τὸνtrueἀληθινόν·andκαὶwe areἐσμὲνinἐνHim who [is]τῷtrueἀληθινῷ,inἐνtheτῷSonυἱῷof HimαὐτοῦJesusἸησοῦChristΧριστῷ.HeοὗτόςisἐστινtheὁtrueἀληθινὸςGodθεὸςandκαὶlifeζωὴeternalαἰώνιος.

Now we know that the Son of God is come, and He has given to us understanding, so that we may know the One who [is] true; and we are in the One who [is] true, in His Son Jesus Christ. He is the true God and eternal life.