DEUT461 [This verse]. It is a mitzvah for us to love the one who enters under the wings of the Shechinah, undertaking to observe all the commands of the Torah. In 36 places the Torah cautions us to love the stranger, and not to mislead him even if only words were involved. God's love for them is greater than the love of Israel. Think of this parable: There are two men -- one loves the king, the other was beloved by the king. Who is greater? Is it not the one whom the king loves? Now the Israelites love the Holy One, and He loves the stranger, as it is written, "and He loves the stranger and gives him bread and raiment." Therefore, it is a mitzvah for us to love the one whom the king loves.... (R. Yehuda Hehasid (died 1217), Sefer Hassidim, p. 116.)