In the context of John 1:10-12, the pronouns (“Him” / “His”) refer to Jesus, the one we must “receive” and “believe in His name.” Yet, these pronouns require an antecedent noun as a referent which is the same gender and number (masculine, singular) as the pronouns. The only possible singular, masculine noun which can be the antecedent for these pronouns is the noun “Logos” (Word) in verse 1. This requires that “Logos” was a personal being, that He has a name, and that name is Jesus, the one who “became flesh” in vs. 14.
Also, John wrote of Logos, that “everything through Him originated“ (δι᾽ αὐτοῦ ἐγένετο) in John 1:3, and in vs. 10 he wrote of Jesus, “the world through Him originated” (δι᾽ αὐτοῦ ἐγένετο). The identical language concerning the role of Agent in both is the same. Verse 10 simply summarizes “everything” as “the world.”
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