Deuteronomy 10:19

Love ye therefore the stranger
Because the Lord loves him; and another reason follows, particularly binding on the Israelites:

for ye were strangers in the land of Egypt;
and therefore should sympathize with such, and show them compassion, relieve them in distress, and afford them whatever they want, and is in the power of their hands to communicate to them; remembering their own condition in Egypt, and how welcome such a treatment would have been to them then, as well as the kind and careful providence of God towards them at that time.