Eligibility To Eat of Holy Things (Leviticus 22:10-16).
“There shall no stranger eat of the holy thing: a sojourner of the priest's, or a hired servant, shall not eat of the holy thing.”
Those not of priestly stock may not eat of a holy thing, whether they be visitors or hired servants.
“But if a priest buy any soul, the purchase of his money, he shall eat of it; and such as are born in his house, they shall eat of his bread.”
But permanent members of the household may eat of holy food, whether bondservants or family members and permanent servants born in the house and seen as part of the household.
“And if a priest's daughter be married unto a stranger, she shall not eat of the contribution offering of the holy things.”
However a priest's daughter who has married outside the line of Aaron may not eat of the contribution offering of the holy things. She no longer comes under the descent of ‘Aaron and his sons'.
“ But if a priest's daughter be a widow, or divorced, and have no child, and be returned unto her father's house, as in her youth, she shall eat of her father's bread, but there shall no stranger eat of it.”
On the other hand if through widowhood or divorce she return to her father's house childless she once again becomes eligible. If she has a child than she will have responsibilities to her husband's family and will still be seen as part of that family. But none who is not of true descent may eat of it.
“And if a man eat of the holy thing unwittingly, then he shall put the fifth part of it to it, and shall give to the priest the holy thing.”
If a man accidentally and unwittingly partakes of a holy thing, then he must remedy the situation by replacing it and adding a fifth part to it. He would presumably do this by offering a guilt offering or peace sacrifice himself, with the holy thing going to the priest, and extra besides.
“And they shall not profane the holy things of the children of Israel, which they offer to Yahweh, and so cause them to bear the iniquity that brings guilt, when they eat their holy things. For I am Yahweh who sanctifies them.”
So the priests are to guard their privileges and not treat them lightly. They are not to profane what they receive as holy things from Yahweh, which have been offered by the children of Israel. Otherwise they will bring guilt on themselves when they eat of them. They must remember that they are from Yahweh Who sets them apart and has made them holy.
We too must ensure that when God entrusts us with something we are careful to ensure its right use. It is not given to us for us to do what we like with, but to use it in accordance with His instruction. Some is for use in God's work alone, other is for us and our families. We must not mix the two. But what is His should not be used for our own pleasure.