Reference for Numbers 9:1

וַיְדַבֵּ֣ר יְהוָ֣ה אֶל־מֹשֶׁ֣ה בְמִדְבַּר־סִ֠ינַי בַּשָּׁנָ֨ה הַשֵּׁנִ֜ית לְצֵאתָ֨ם מֵאֶ֧רֶץ מִצְרַ֛יִם בַּחֹ֥דֶשׁ הָרִאשׁ֖וֹן לֵאמֹֽר׃

And the LORD spoke unto Moses in the wilderness of Sinai, in the first month of the second year after they were come out of the land of Egypt, saying:

BDB