Mattityahu 16:4-6

Orthodox Jewish Bible

⁴ A dor rah umnaef (an evil and adulterous generation) demands an ot (sign), and no ot will be given it except the ot of Yonah HaNavi. And having left them, Rebbe, Melech HaMoshiach went away.

⁵ When the Moshiach’s talmidim arrived at the other side, they had forgotten to take lechem.

⁶ But Rebbe, Melech HaMoshiach said to them, Take special precaution against the chametz (swelling leaven) of the Perushim and Tzedukim.