The number "four" in the Bible represents things being linked together or joined. This is partly because four is two times two, and two represents the ultimate linking between our desire to be good and our understanding of truth. We can also see this in the fact that most buildings are rectangular, with the four sides linking together to make a whole. We also divide directions into four -- north, east, south and west -- and talk about the "four corners" of something meaning all of it. So our special thinking naturally looks at four sides as linking together into a whole.

(References: Apocalypse Explained 417; Arcana Coelestia 1686, 9103, 9601, 9767, 9864)

7796. 'And Moses and Aaron performed all these wonders before Pharaoh' means that these stages of vastation, and the consequent corroborations that they are ruled by evil, were brought about by the truth emanating from God. This is clear from the representation of 'Moses and Aaron' as God's truth, 'Moses' truth that emanates directly from God, and 'Aaron' that which does so indirectly, dealt with in 7010, 7089, 7382; and from the meaning of 'the wonders' performed in Egypt or belonging to the Church who have led an evil life. The fact that those things are depicted by the wonders of Egypt may be recognized from the meaning of each wonder. And for the fact that they also depict corroborations that those people do not have faith but are ruled by evil, see immediately above in 7795. It says that 'Moses and Aaron performed these wonders', when in fact they were not Performed by them but by God. But what happened has been stated in that way because God's truth is represented by 'Moses and Aaron', and the wonders were performed by God through the truth emanating from Himself, since all that God Himself performs is performed through the truth emanating from Him. God Himself is the Being (Esse) of all things, but the truth emanating from Him is the Coming-into-Being (Existere) of all things, which rises out of His Being. Good itself, which is God's Being (Esse), brings forth all things by means of its Truth. It is said that the stages of vastation were brought about by the truth emanating from God; but it should be understood that Divine Truth is not the cause of them since God subjects no one to vastation. Rather, an evil person subjects himself to it through obstinate opposition to God's truth by eliminating, rejecting, or perverting it, and through turning God's goodness, which flows in unceasingly, into evil. This then is what subjects him to vastation; and from this it is evident where the cause of it lies, not in the inflow of goodness and truth from God - for unless they inflow life is non-existent - but in their conversion to evil and falsity, committed by the person who is ruled by evil.