Exodus 23:18

Thou shalt not offer the blood of my sacrifice with leavened bread; neither shall the fat of my sacrifice remain until the morning.

Exodus 23:18 (KJV)

Context

This verse stands within the Book of the Covenant, the collection of laws God gave Israel after the Ten Commandments (Exodus 20–23). The surrounding instructions concern the three annual feasts and the firstfruits offering. These rules shaped how the people were to worship, reminding them that God’s commands were not optional but central to their life as His covenant people.

Meaning

The first prohibition forbids offering the blood of the sacrifice with leavened bread. Leaven, the agent that makes dough rise, was linked in the Old Testament with fermentation and corruption. It was excluded from offerings made by fire, as Leviticus 2:11 makes clear. The blood represented life given for atonement, so it could not be mixed with anything that symbolized impurity or sin.

The second command says the fat of the sacrifice must not remain until morning. In the peace and fellowship offerings, the fat belonged to the Lord and had to be burned on the altar the same day (Leviticus 3:16; 7:23-25). This taught Israel to give God the choicest portion promptly, without delay or neglect. The same command appears again in Exodus 34:25, showing its importance.

Biblical connections

The New Testament uses leaven as a picture of sin and hypocrisy, as in 1 Corinthians 5:6-8 and Luke 12:1. This reinforces the call to sincerity and truth in worship. The verse also points forward to Christ, who offered Himself without blemish and whose blood cleanses us from sin. His perfect sacrifice fulfilled the ceremonial law, so believers are no longer bound to offer animal sacrifices (Hebrews 10:1-18).

Application

These ancient rules teach enduring principles. Worship must be approached with purity, not mixed with known sin. God deserves our best, offered promptly and wholeheartedly, not the leftovers or what we delay giving. Treating worship as casual or postponing obedience dishonors Him. Bring Him your first and finest, and let your devotion be immediate and sincere.

Reflection

Examine your own worship. Are you bringing God the finest of your time, energy, and devotion, or only what remains after other priorities? Let this verse move you to offer sincere, prompt, and pure worship, trusting that Christ has made the way for you to draw near with a whole heart.