Exodus 23:18

Thou shalt not offer the blood of my sacrifice with leauened bread, neither shall the fat of my sacrifice remaine vntill the morning. Exodus 23:18 (KJV)

Exodus 23:18 belongs to a broader section of laws and regulations given by God to the Israelites. These statutes were intended to guide the people in their worship and daily conduct, promoting holiness, justice, and righteousness. In this particular verse God addresses the proper manner of offering sacrifices, highlighting two key elements: the use of leavened bread and the handling of the fat of the sacrifice.

Leaven, a substance used in baking to cause dough to rise, was commonly associated in biblical times with fermentation, corruption, or impurity. In the sacrificial context leavened bread was prohibited because it symbolized impurity or sinfulness. Offering a sacrifice was an act of worship and atonement that required approaching God in a state of purity and holiness. Consequently, leaven was not permitted in these offerings, while unleavened bread—symbolizing purity and sincerity—was to be offered instead (Exodus 12:8).

The fat of the sacrifice refers to the fatty portions of the animal presented to God. Scripture commands that the fat must not be left overnight; the verse does not require that it be burned on the altar at that moment, but it does stress giving God the best portion without delay. This instruction prevents the fat from spoiling or being used for other purposes, ensuring its exclusive dedication to God and underscoring the principle of offering the choicest parts promptly.

These regulations were designed to teach the Israelites the importance of approaching God with reverence, purity, and obedience. They reflect God’s desire for sincere, wholehearted worship from His people, using tangible symbols to instill a deeper spiritual attitude.

It is important to note that Christians are not bound by the Old Testament ceremonial law. Jesus Christ’s sacrifice on the cross fulfilled and superseded the need for animal sacrifices (Hebrews 10:1‑18). Nevertheless, studying these ancient statutes helps believers grasp enduring principles of worship, reverence, and obedience that remain applicable today.

In summary, Exodus 23:18 emphasizes offering sacrifices in a manner that reflects purity, sincerity, and wholehearted devotion. The prohibition of leavened bread and the prompt handling of the fat of the sacrifice serve as symbolic acts that taught the Israelites the necessity of reverence and obedience in their worship of God.