Musar for Exodus 2:12

I have found a beautiful commentary concerning this amongst the writings of the Arizal. We must understand why Moses bothered to set aside these three cities, seeing they could not perform their function until the other three cities of refuge on the West Bank of the Jordan had been set aside also (Numbers 35,13; compare Makkot 9). When we understand the Arizal's commentary on the problem of the cities of refuge, we will also understand why the Torah interrupted the report about the gift of the Torah to the Jewish people by mentioning already at this point that Moses set aside the three cities of refuge which were to be on the East Bank of the Jordan. The Ari zal sees in Moses' action an attempt at rehabilitation for when he had committed manslaughter and had taken it upon himself to slay the Egyptian who had tortured a Jew (Exodus 2,12). He had considered this killing in the category of a murder inadvertently committed because he had felt at the time that he was performing a מצוה by doing so. The first letters of the words הירדן מזרחה שמה, which describe what Moses did, form the acronym משה. The following words, אשר ירצח את רעהו are also an allusion to Moses. We have already described that Moses was the re-incarnation of Abel. The Torah here alludes to the first murder i.e. fratricide, when Cain slew his brother Abel. This is also alluded to in Exodus 2,11, when the Torah describes Moses as observing an Egyptian man: מכה איש עברי מאחיו, "torturing a Jewish man, one of his brothers." The Torah hints that the Egyptian was a former brother of Moses, i.e. a re-incarnation of Cain. In this instance the evil which had been part of Cain's character had re-surfaced in the character of this Egyptian. We have explained on another occasion that the נפש of Cain, i.e. his lowest spiritual part, was re-incarnated in the body of this Egyptian, whereas Cain's רוח, the superior part of his soul, was re-incarnated in the body of Yitro. The highest part of Cain's soul, i.e. the נשמה, was re-incarnated in the body of Korach. Korach made the mistake of quarrelling with Moses; this resulted in his גלגול failing to achieve its ultimate purpose. Yitro was of mixed feelings. When he became aware that he was wrong, had sinned, he converted to Judaism. At the end of the paragraph dealing with the cities of refuge the Torah writes: וזאת התורה אשר שם משה. This means that Moses determined the need to set aside these three cities of refuge at this time for his own sake.

Moses was jealous of the Egyptian, as it is said, "And he smote the Egyptian" (Exod. 2:12). And so we find in the case of Elijah, when he said, "I have been very jealous for the Lord, the God of hosts, for the children of Israel have forsaken Thy covenant" (I Kings 19:10). And so is it said, "In that he was very jealous for My sake among them" (Num. 25:11), and the Lord, may He be Blessed, gave him his reward for this as it is said : "Behold, I give unto him My covenant of peace!" (Num. 25:12). And it is said, "… Ye shall not be afraid of any man …" (Deut. 1:17). Now he who reveres the Lord, may He be Blessed, will gladly offer his life for the sanctification of God's name. As it is said, "Whoso is on the Lord's side, let him come unto me. And all the Levites rallied to him" (Exod. 32:26), and it is further said, "And when Phinehas, the son of Eleazar, the son of Aaron the priest, saw it, he rose up from the midst of the congregation, and took a spear in his hand" (Num. 25:7).

The allusion -רמז- to all this we find in the numerical value of the words המצרי [ויך את] the word hamitzri equalling 345, the same numerical value as that of משה. The word ויך itself equals 37 when you add an extra value of "1" for the word itself. This is the numerical value of the name הבל. After that Moses fled and joined Yitro.