Exodus 12:24

12:24 You must observe this event as an ordinance for you and for your children forever.

Exodus 30:21

30:21 they must wash ¹  their hands and their feet so that they do not die. And this ²  will be a perpetual ordinance for them and for their descendants ³  throughout their generations.” ⁴ 

Exodus 31:16

31:16 The Israelites must keep the Sabbath by observing the Sabbath throughout their generations as a perpetual covenant.

[30:21]  ¹ tn Heb “and [then] they will wash.”

[30:21]  ² tn The verb is “it will be.”

[30:21]  ³ tn Heb “for his seed.”

[30:21]  ⁴ tn Or “for generations to come”; it literally is “to their generations.”