Following the victory over Midian, a unique directive dictates how the spoils of war are to be divided. A specific portion must first be set aside purely as a dedication to God before any distribution to the priests takes place [העמק דבר, ביאור שטיינזלץ]. This requirement stems from the specific nature of the conflict. Because this was God's war of vengeance in a foreign territory—unlike the earlier conquests of Sihon and Og where the priests and Levites were barred from taking any share of the land or the spoils—they are now permitted to receive a portion through this special tribute [רמב״ן, הטור הארוך].
The required tribute highlights a clear distinction between those who fought and those who stayed behind. The soldiers are asked to give one out of every five hundred from both the captive people and the animals [אבן עזרא, ביאור שטיינזלץ]. The primary approach among commentators explains that this relatively small fraction is a deliberate leniency from God, acknowledging the physical toll, effort, and danger the soldiers faced on the battlefield [חזקוני]. In contrast, the civilians who remained safely at home are required to give a significantly larger portion of one in fifty to the Levites. This higher rate serves as an acknowledgment that the military success was secured not just by physical combat, but through the prayers of the Levites and their dedicated guarding of God's Tabernacle [מלבי״ם].
While the civilians give their share to the Levites, the soldiers present their tribute directly to Eleazar the priest. Mathematically, the soldiers' rate of one in five hundred is exactly one-tenth of the Levites' share, mirroring the standard tithe that Levites normally pass on to the priests. To clarify that this is a unique tribute and not a standard tithe, it is separated immediately and given directly to the priest. Beyond the practical division of wealth, this direct transfer holds a profound educational purpose. It serves to remind the returning warriors that their victory was not achieved solely by the might of their own swords. Instead, their success was deeply rooted in the spiritual strength of the High Priest, the merit of his son Phinehas, and the holy vessels that accompanied the troops to the front lines [מלבי״ם].