Exodus 6:5

6:5 I have also heard the groaning of the Israelites, whom the Egyptians are enslaving, and I have remembered my covenant.

Exodus 20:6

20:6 and showing covenant faithfulness to a thousand generations of those who love me and keep my commandments.

Exodus 31:16

31:16 The Israelites must keep the Sabbath by observing the Sabbath throughout their generations as a perpetual covenant.