it might be pointed out that he did just that in John 12:39–41 by quoting from Isaiah’s temple vision of Yahweh in Isaiah 6 and then concluding by saying, “These things Isaiah said because he saw His glory and he spoke about Him.” The only “Him” in the context is Jesus; hence, for John, Isaiah, when he saw Yahweh on His throne, was in reality seeing the Lord Jesus. John 1:18 says as much as well.[18]
