Deuteronomy 30:9-10

Then the LORD your God will make you most prosperous in all the work of your hands and in the fruit of your womb, the young of your livestock and the crops of your land. The LORD will again delight in you and make you prosperous, just as he delighted in your ancestors, if you obey the LORD your God and keep his commands and decrees that are written in this Book of the Law and turn to the LORD your God with all your heart and with all your soul.