TSK · Numbers 18:12

The first of the firstfruits of your soil you must bring to the house of the LORD your God.“You must not cook a young goat in its mother’s milk.

You can present them to the LORD as an offering of first fruit, but they must not go up to the altar for a soothing aroma.

From the places where you live you must bring two loaves of bread for a wave offering; they must be made from two tenths of an ephah of fine wheat flour, baked with yeast, as first fruits to the LORD.

and you eat some of the food of the land, you must offer up a raised offering to the LORD.

you must take the first of all the ground’s produce you harvest from the land the LORD your God is giving you, place it in a basket, and go to the place where he chooses to locate his name.

When the edict was issued, the Israelites freely contributed the initial portion of their grain, wine, olive oil, honey, and all the produce of their fields. They brought a tenth of everything, which added up to a huge amount.