In this week's parsha, Re'eh, we learn some very important things. These include:

• Idolatry is evil. It is compared to an illness, or a cancer, that must be eradicated so it will not harm or infect other areas of the body (or in this case, the nation).
• It is important to have one place of centralized worship. This is what the Beit Hamikdash was, and it promoted unity.
• False prophets may arise, but we should not trust what they say. If anyone tells us to go against God's laws in the Torah, we know they are not speaking truth.
• Tzedaka is an extremely important mitzvah that focuses on tempering justice with compassion. It is a way of acknowledging any money we have comes from God, and learning to focus on others, not only ourselves.