הֵ֣ן גּ֥וֹר יָג֛וּר אֶ֖פֶס מֵֽאוֹתִ֑י מִי־גָ֥ר אִתָּ֖ךְ עָלַ֥יִךְ יִפּֽוֹל׃
Que si l’on se mettait contre toi, ce serait sans mon aveu; quiconque se mettra contre toi succombera sur ton sol.
Netzach Yisrael
And similarly, they said in Chapter 2 of Yevamot (24b:8): The sages taught, "Converts are not accepted in the days of the Messiah. Similarly, they did not accept converts in the days of King David or in the days of King Solomon." Rabbi Eliezer said, "What is the verse [it is based upon]? Behold, they may gather together [gor yagur], but without Me; whosoever shall gather together [gar] with you shall fall on yours (Isaiah 54:15). He who dwells [gar] with you in your poverty, he is the one who shall fall on yours. But not another." Behold, you see that we do not accept converts when times are good [for the Jews]. For a beginning should not be made from good days. Since a person will certainly serve God, may He be blessed, because of this, when he sees good. Hence, it is necessary for him to have his start before [the good times]. Then he will [merit it to] acquire the world to come even during the good days.