The burnt offering was a central part of the sacrificial system in ancient Israel, serving as an expression of devotion, atonement, and worship. The instruction to wash the internal organs and legs with water underscores the importance of purity and cleanliness in offerings made to God. This act of purification ensured that the sacrifice was free from impurities, symbolizing the worshiper's desire for spiritual cleanliness.
The priest's role in burning the entire offering on the altar signifies the total surrender and dedication of the offering to God. The complete consumption by fire represents the worshiper's commitment to giving their all to God, holding nothing back. This act of sacrifice was seen as a "pleasing aroma" to the Lord, indicating that God found joy and satisfaction in the sincere devotion and obedience of His people. It serves as a reminder of the importance of approaching God with a pure heart and a willingness to offer our best in service and worship.