Exodus 13:10

So you must keep ¹  this ordinance at its appointed time from year to year. ² 

You must keep this ordinance at the appointed time year after year.

"Therefore, you shall keep this ordinance at its appointed time from year to year.

"So celebrate this festival at the appointed time each year.

Follow these instructions at the set time, year after year after year.

So let this order be kept, at the right time, from year to year.

You shall keep this ordinance at its proper time from year to year.

"You shall therefore keep this ordinance in its season from year to year.

So you must keep ¹  this ordinance at its appointed time from year to year. ² 

¹ tn The form is a perfect tense with the vav (ו) consecutive, functioning as the equivalent of an imperfect of instruction or injunction.

² tn Or “every year,” or “year after year.”