'Everlasting' in the Bible

In the tent of meeting outside the veil, which is before the testimony, Aaron and his sons shall dress them from evening to morning before Jehovah: it is an everlasting statute, for their generations, on the part of the children of Israel.

And they shall be upon Aaron and his sons when they enter into the tent of meeting, or when they come near to the altar to serve in the sanctuary; that they may not bear iniquity and die an everlasting statute for him and his seed after him.

And thou shalt gird them with the girdle Aaron and his sons, and bind the high caps on them; and the priesthood shall be theirs for an everlasting statute; and thou shalt consecrate Aaron and his sons.

And they shall be for Aaron and his sons, as an everlasting statute, on the part of the children of Israel; for it is a heave-offering; and it shall be a heave-offering on the part of the children of Israel of the sacrifices of their peace-offerings, as their heave-offering to Jehovah.

And they shall wash their hands and their feet, that they may not die; and it shall be an everlasting statute for them, for him and for his seed throughout their generations.

And the children of Israel shall keep the sabbath, to observe the sabbath throughout their generations it is an everlasting covenant.

And thou shalt anoint them, as thou didst anoint their father, that they may serve me as priests. And their anointing shall be to them an everlasting priesthood throughout their generations.