Parallel
1 John 5:13
Robinson-Pierpont Byzantine Textform · Berean Standard Bible
Ταῦτα ἔγραψα ὑμῖν τοῖς πιστεύουσιν εἰς τὸ ὄνομα τοῦ υἱοῦ τοῦ θεοῦ, ἵνα εἰδῆτε ὅτι ζωὴν αἰώνιον ἔχετε, καὶ ἵνα πιστεύητε εἰς τὸ ὄνομα τοῦ υἱοῦ τοῦ θεοῦ.
I have written these things to you who believe in the name of the Son of God, so that you may know that you have eternal life (note: BYZ and TR include and that you may believe in the name of the Son of God.).