 Mainstream Christian theologians nearly always reject “modalism”, meaning a one-self theory like that of Sabellius (fl. 220), an obscure figure who was thought to teach that the Father, Son, and Holy Spirit are sequential, non-essential modes, something like ways God interacts with his creation. Thus, in one epoch, God exists in the mode of Father, during the first century he exists as Son, and then after Christ’s resurrection and ascension, he exists as Holy Spirit (Leftow 2004, 327; McGrath 2007, 254–5; Pelikan 1971, 179). Sabellian modalism is usually rejected on the grounds that such modes are strictly sequential, or because they are not intrinsic features of God, or because they are intrinsic but not essential features of God. The first aspect of Sabellian modalism conflicts with episodes in the New Testament where the three appear simultaneously, such as the Baptism of Jesus in Matthew 3:16–7. The last two are widely held to be objectionable because it is held that a doctrine of the Trinity should tell us about how God really is, not merely about how God appears, or because a trinitarian doctrine should express (some of) God’s essence. Sabellian and other ancient modalists are sometimes called “monarchians” because they upheld the sole monarchy of the Father, or “patripassians” for their (alleged) acceptance of the view that the Father (and not only the Son) suffered in the life of the man Jesus.