“When you bring a grain offering baked in the oven as an offering, it shall be unleavened loaves of fine flour mixed with oil or unleavened wafers smeared with oil. And if your offering is a grain offering baked on a griddle, it shall be of fine flour unleavened, mixed with oil. You shall break it in pieces and pour oil on it; it is a grain offering. And if your offering is a grain offering cooked in a pan, it shall be made of fine flour with oil. And you shall bring the grain offering that is made of these things to the Lord, and when it is presented to the priest, he shall bring it to the altar. And the priest shall take from the grain offering its memorial portion and burn this on the altar, a food offering with a pleasing aroma to the Lord. But the rest of the grain offering shall be for Aaron and his sons; it is a most holy part of the Lord‘s food offerings.” Leviticus 2:4-10
In the earliest days Cain made an offering of produce from the field and it was unacceptable. Under this new order, there was a whole sacrifice infrastructure. Part of it was to attoned for sin, but many others were to support the new ministry class God had created. Man would no longer make a sacrifice when he felt the need to do so. It was regulated and made mandatory. It was to be a sustainable activity and obligation. But it was also an opportunity to enact sowing and reaping for their benefit.
In Christ, the sacrifice for sin has been abolished.
And the Holy Spirit also bears witness to us; for after saying, “This is the covenant that I will make with themafter those days, declares the Lord:
I will put my laws on their hearts,
and write them on their minds,” then he adds, “I will remember their sins and their lawless deeds no more.” Where there is forgiveness of these, there is no longer any offering for sin. Hebrews 10:15-18
So the ministry has not been abolished with the sacrifice for sin. It has been repurposed to bring the good news to the world that their sins have been taken away. And the ministry class God created is still in effect and sustainable through the offerings of God’s people.