And you and your sons with you shall keep your priesthood for everything of the altar and for that within the veil, and you shall serve; I give your priesthood as a service of gift, and the outsider who comes near shall be put to death.
Torah Temimah → יומא כ״ד א׳ (scope of avodos)
English: “Service of gift” — not a service of removal; a complete service — not a service that has another service after it.
Derasha limiting which avodos incur death for a zar.
Zerika, haktarah, and nisuch incur death for a zar; terumas ha-deshen and similar removal-avodos do not.