Even in Eretz Yisrael, the Jewish people should accept converts, as it could enter your mind to say that it is only for the sake of benefiting from the goodness of Eretz Yisrael, and not for the sake of Heaven, that they are converting, and therefore they should not be accepted. And it could also enter your mind to say that even nowadays, when God’s blessing has ceased and there is no longer the original goodness from which to benefit, one should still suspect their purity of motives because there are the gleanings, the forgotten sheaves, and the corners of fields, and the poor man’s tithe from which they would benefit by converting. Therefore, the verse teaches us that they are accepted even in Eretz Yisrael.
The Sages taught in a baraita: With regard to a potential convert who comes to a court in order to convert, at the present time, when the Jews are in exile, the judges of the court say to him: What did you see that motivated you to come to convert? Don’t you know that the Jewish people at the present time are anguished, suppressed, despised, and harassed, and hardships are frequently visited upon them? If he says: I know, and although I am unworthy of joining the Jewish people and sharing in their sorrow, I nevertheless desire to do so, then the court accepts him immediately to begin the conversion process.