Talmud Shabbat 127a
R. Judah said in the name of Rav's name: Welcoming guests is greater than welcoming the presence of Shechinah (God)....There are six things, the fruit of which humans eat in this world, while the principal remains for them in the world to come: welcoming guests, visiting the sick, meditation in prayer, early attendance for study, rearing one's children to the study of Torah, and judging one's neighbor in the scale of merit.
1) Why do you think hachnasat orchim, "welcoming guests" is so important as a Jew?
2) When you first entered this community (or even the Jewish community) who welcomed you?
3) Have you ever been in a situation where you did not feel welcome or felt like a stranger and no one reached out to you?
4) How are we like guests in God's home? How is that related to asking for forgiveness of our sins on Yom Kippur?