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

10 You shall therefore keep this statute at its appointed time from year to year.

10 Thou shalt therefore keep this ordinance in his season from year to year.

10 So observe the decree of this festival at the appointed time each year.

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

10 So celebrate this feast every year at the right time.

10 Thou shalt therefore keep this ordinance in its season from year to year.

10 And thou shalt keep this ordinance at its set time from year to year.

10 you must follow these rules every year at this time. 

10 Keep this statute at its appointed time from year to year.

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

10 And you will keep this statute at its appointed time from year to year.

10 Obey this law at the appointed time year after year.