Nehemiah 10:30-33

30and that we would not give our daughters unto the peoples of the land, nor take their daughters for our sons; 31and if the peoples of the land bring wares or any grain on the sabbath day to sell, that we would not buy of them on the sabbath, or on a holy day; and that we would forego the seventh year, and the exaction of every debt.

32Also we made ordinances for us, to charge ourselves yearly with the third part of a shekel for the service of the house of our God; 33for the showbread, and for the continual meal-offering, and for the continual burnt-offering, for the sabbaths, for the new moons, for the set feasts, and for the holy things, and for the sin-offerings to make atonement for Israel, and for all the work of the house of our God.