出埃及记 34:23

כל זכורך means all the males among you (cf. Rashi on Exodus 23:17 and the note thereon). — Many precepts of the Torah are stated and then repeated, aye, some of them three times and even four (this section, for instance, is, with a few alterations, identical with the contents of chapter Exodus 23:12—19) in order to declare him who infringes them guilty and to punish him for each of the number of prohibitions which are connected with them and for each of the number of positive commands which are connected with them.

שָׁלֹ֥שׁ פְּעָמִ֖ים בַּשָּׁנָ֑ה יֵרָאֶה֙ כׇּל־זְכ֣וּרְךָ֔ אֶת־פְּנֵ֛י הָֽאָדֹ֥ן ׀ יְהֹוָ֖ה אֱלֹהֵ֥י יִשְׂרָאֵֽל׃

Three times in the year shall all your males appear before the Lord God, the God of Yisra᾽el.