It shall come to pass if you will not hearken unto the voice of the Lord thy God, to learn and to do all of his command which I command you this day, that all these. That all these curses shall come upon you and overtake. Curse shall you be in the city and in the field. Curse shall be the fruit of your body (this means your kids are under the curse if you are not obedient to God). Cursed shall you be when you come in and cursed shall you be when you go out. The Lord will send out on you cursing, vexation, and rebuke, and everything that you set your hands to do, until you be destroyed because of the wickedness of your doings whereby you have forsaken God. Pestilence will become your friend, cancer and fever will kill you.
Deuteronomy 28:15-44 explains all the curses that was removed when Jesus died on the cross.