GAL 4:24

24 [I am telling you this] as an illustration. These [two women] symbolize two agreements. [God made] the first [agreement, which involved obeying the laws that God gave to Moses] at Sinai Mountain. [Because that agreement forces those who accept it to keep obeying all its rules] [MET], [it is like a slave mother who] gives birth to slaves. [So] Hagar, [the female slave, symbolizes] that [agreement].