Exodus 1:14; Exodus 23:21

Exodus 1:14

14 And they made their lives bitter with hard bondage, in morter, and in brick, and in all manner of service in the field: all their service, wherein they made them serve, was with rigour.

Exodus 23:21

21 Beware of him, and obey his voice, provoke him not; for he will not pardon your transgressions: for my name is in him.