The Torah relates to the "ger" as one who dwells among Am Israel; but commentators views the ger as a convert - a "ger tzedek." The Oral Torah divided the ger into two types - one who is obligated in all of the commandments of the Torah. We are obligated to love this ger - the "Ger Tzedek" - and s/he is considered fully Jewish, as opposed to the "Ger Toshav" who is obligated in the seven commandments of Noah's sons, and is permitted to live in Israel.