פּירוש אויף שמות 18:4

ויצלני מחרב פרעה AND HE DELIVERED ME FROM THE SWORD OF PHARAOH — When Dathan and Abiram made the disclosure regarding the matter of the Egyptian whom Moses had killed and Pharaoh wished to slay Moses, his neck became as a column of marble so that the sword was powerless against him (Shemot Rabbah 1:31; cf. Rashi on Exodus 2:15).

ושם האחד אליעזר, “and the name of the one was Eliezer.” Even though he was Moses’ second son, the Torah describes him as “the one;” the reason is that his name was due to an event involving him personally, seeing that it recalled that he had had to flee from Egypt. It therefore appeared to Moses as if this really was his first son.

ויצילני מחרב פרעה. At the time Eliezer was born the old king who had wanted to execute Moses had already been dead for a while. This is one of the reasons why the Torah mentioned this death in Exodus 2,23. At that time Moses felt secure from further attempts on his life. Pharaoh’s international police had an exceedingly long reach, just as that of Achav, King of Israel, who had been hunting for the prophet Elijah all over the neighbouring countries of Israel as documented in Kings I 18,10 “is there any kingdom to which the king (Achav) has not sent emissaries to arrange to have to you captured?”