About the blessings of doing God's will:

If you pay attention to these laws and are careful to follow them, then the Lord your God will keep his covenant of love with you, as he swore to your forefathers. � He will love you and bless you and increase your numbers. He will bless the fruit of your womb, the crops of your land--your grain, new wine and oil--the calves of your herds and the lambs of your flocks in the land that he swore to your forefathers to give you. � You will be blessed more than any other people; none of your men or women will be childless, nor any of your livestock without young. � The Lord will keep you free from every disease. He will not inflict on you the horrible diseases you knew in Egypt, but he will inflict them on all who hate you. � So if you faithfully obey the commands I am giving you today--to love the Lord your God and to serve him with all your heart and with all your soul-- � then I will send rain on your land in its season, both autumn and spring rains, so that you may gather in your grain, new wine and oil. � I will provide grass in the fields for your cattle, and you will eat and be satisfied. � For the Lord your God is the one who goes with you to fight for you against your enemies to give you victory." � 

Verse References In The Order Presented Above -- Deuteronomy 7:12 ; Deuteronomy 7:13 ; Deuteronomy 7:14 ; Deuteronomy 7:15 ; Deuteronomy 11:13 ; Deuteronomy 11:14 ; Deuteronomy 11:15 ; Deuteronomy 20:4