90. Moreover, God’s Son discovers the difference between generation and grace when He says: “I go up to My Father and your Father, to My God and your God.” S. John xx. 17. The “grace” of which St. Ambrose speaks is the grace of adoption. Jesus Christ is the Son of God φύσει, we are sons υἱοθεσίᾳ “by adoption.” He did not say, “I go up to our Father,” but “I go up to My Father and your Father.” This distinction is the sign of a difference, inasmuch as He Who is Christ’s Father is our Creator.