Tanach do Kapłańska 23:15

וּסְפַרְתֶּ֤ם לָכֶם֙ מִמָּחֳרַ֣ת הַשַּׁבָּ֔ת מִיּוֹם֙ הֲבִ֣יאֲכֶ֔ם אֶת־עֹ֖מֶר הַתְּנוּפָ֑ה שֶׁ֥בַע שַׁבָּת֖וֹת תְּמִימֹ֥ת תִּהְיֶֽינָה׃

I liczyć sobie będziecie od drugiego dnia święta, - od dnia, któregoście przynieśli snop przedstawienia, siedm tygodni - pełnych być powinno. 

I Samuel

It was the day after the New Moon, the second [day], and Dovid's place was empty. Shaul said to Yonoson, his son, "Why has the son of Yishay not come to the meal neither yesterday nor today?"
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Leviticus

He shall wave the omer before Adonoy that it be favorably accepted for you. On the day after the day of rest (Pesach), the kohein shall wave it.
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Numbers

On the day of the first fruits when you bring a new meal-offering to Adonoy on your Festival of Weeks, there shall be a sacred holiday to you when you shall not do any work of consequence.
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