I.e., to be baptized. A common name for Baptism was "illumination," partly with reference to the instructions which preceded it, as Justin Martyr says; "The laver is called illumination because the minds of those who learn these things are enlightened:" partly also (perhaps rather) because baptism was regarded as a translation from the kingdom of darkness into the kingdom of light, the recipient becoming a child of God, and as such entitled to the grace of the illuminating Spirit. Catechumens were divided into four classes according to the stages of their preparation. It is to those who were in the final stage, the competentes or elect as they were called, that the following instructions are addressed. ↩