1 Corinthians 10:2

ἐβαπτίσαντο. Rec. and Tregelles with B. Tischendorf reads ἐβαπτίσθησαν with אACDEFG. Westcott and Hort put it in the margin. ἐβαπτίσθησαν may have been substituted for text either because it is more common in N. T. or because of the εἰς τὸν Μωϋσῆν which follows. But it is hardly possible to conceive of ἐβαπτίσαντο having been substituted for ἐβαπτίσθησαν.

2. εἰς τὸν Μωϋσῆν. The passing through the cloud (Exodus 14:19) and the sea was a type of Christian Baptism, in that he who passes through it exchanges a state of bondage for a state of freedom, the hard yoke of a Pharaoh for the fatherly care of God, and this in consequence of his following the guidance of a leader sent by God. The Israelites were baptized ‘unto Moses,’ because by passing through the cloud and the sea they had become connected with him, dependent on his commands and guidance. Cf. εἰς τὸ ὄνομα, Matthew 28:19. Cf. also Acts 19:3-5.