Shemot 6:9-11

Orthodox Jewish Bible

⁹ And Moshe spoke so unto the Bnei Yisroel; but they did not listen unto Moshe because of their kotzer ruach (shortness of spirit, broken spirit), and for avodah kesheh (cruel bondage).

¹⁰ And Hashem spoke unto Moshe, saying,

¹¹ Go in, speak unto Pharaoh Melech Mitzrayim, that he let the Bnei Yisroel go out of his land.