Deuteronomy 16:9
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9
「你要计算七七日：从你开镰收割禾稼时算起，共计七七日。
「 nǐ yào jì suàn qī qī rì ： cóng nǐ kāi lián shōu gē hé jià shí suàn qǐ ， gòng jì qī qī rì 。
You shall count for yourselves seven weeks. From the time you begin to put the sickle to the standing grain you shall begin to count seven weeks.