'Throughout Their Generations' in the Bible

It is a night of watching to be observed for the Lord for having brought them out of the land of Egypt; this [same] night is for the Lord, to be observed and celebrated by all the Israelites throughout their generations.

In the Tent of Meeting [of God with His people], outside the veil which is in front of the [ark of the] Testimony [and sets it apart], Aaron [the high priest] and his sons shall keep the lamp burning from evening to morning before the Lord. It shall be a perpetual statute [to be observed] throughout their generations on behalf of the Israelites.

They shall wash their hands and their feet, so that they will not die; it shall be a perpetual statute for them, for Aaron and his descendants throughout their generations.”

So the Israelites shall observe the Sabbath, to celebrate the Sabbath throughout their generations as a perpetual covenant.’

you shall anoint them just as you anointed their father, so that they may serve as priests to Me; and their anointing shall qualify them for an everlasting priesthood throughout their generations.”