Exodus 18:4

Eliezer. Moses’ second son has not previously been mentioned by name, but was probably the one circumcised by Zipporah on the way to Egypt (ch. 4:25). Eliezer means “my God is [my] help.” In contrast, the name Moses gave his first son, Gershom, means “banishment” (ch. 2:22), reflecting a spirit of despondency natural to an exile. The name of the second son revealed the father’s gratitude for the divine protection enjoyed during his flight from Egypt. That Eliezer’s name is mentioned and explained here for the first time is no valid reason for thinking that he had been without a name. From 1 Chron. 23:17 we learn that Eliezer had but one son, Rehabiah, whose descendants had become numerous in the time of Solomon.