And there's a slight sense that Isaiah knows this, because he says, this is God speaking, of course, "I have called thee by thy name though thou hast not known me."
イザヤも知っていたかもしれません なぜなら　曰く もちろんこれは神の言葉です ― "汝は私を知らなかったが 私は汝の名を呼んだ"