DEUT459 We must be especially careful to have compassion on converts to Judaism. This is a positive commandment. Although we are obligated to love all Jews, there is an additional commandment to love a convert to Judaism. The verse ends by mentioning that we also felt the discomfort of being strangers and therefore we must act to alleviate this discomfort for others. By extension we should learn from this commandment to befriend anyone who is a stranger in town. (Chinuch 431) ... If you see a stranger in town, take the initiative to welcome him. Very often you will be able to give him invaluable advice. Even if you are unable to offer him tangible assistance, a friendly word to a stranger is a great kindness in itself. It is not sufficient to merely shake hands with a stranger and then walk away as if fulfilling a ritual. You must sincerely care about his welfare and try to assist him. ... If you see someone standing on a street corner with a map in his hand, it usually means that he needs help. Try to assist him if you can.