QUOTE (existwhere? @ Jan 31 2008, 02:18 PM)

I get so confused when thinking of this topic.
Me, too. To me, a deal sounds like, 1. if you do X, then I will do Y, or 2. if I do Y, I expect you to do X.
The problem with 2. if I do Y, I expect you to do X is that we perform mitzvot because God said so, not because we have expectations of God. Yes, God has promised certain consequences, but we are not making deals with God. Rather, God has made deals with us.
The problem with 1. if you do X, then I will do Y, is that our mitzvah observance should not be contingent on "simanim" from God. The popular exception, of course, is tzedakah, but there too it's NOT that if God makes us rich [or some other outcome, such as finding my lost car keys] then, and only then, will I give tzedakah.
That said, I'm not sure how to understand Yaakov's promise, although at least according to the Ramban, "if" is not the right translation:
20. And Jacob uttered a vow, saying, "
If God will be with me, and He will guard me on this way, upon which I am going, and He will give me bread to eat and a garment to wear;
21. And if I return in peace to my father's house, and the Lord will be my God;
22. Then this stone, which I have placed as a monument, shall be a house of God, and everything that You give me, I will surely tithe to You.