Exodus 1:13

And the Egyptians made the children of Israel to serve with rigor:

They worked the Israelites ruthlessly

So they ruthlessly made the people of Israel work as slaves

The Egyptians used violence to compel the sons of Israel to labor;

and worked them ruthlessly.

So the Egyptians made the children of Israel serve with rigor.

So the Egyptians worked the people of Israel without mercy.

The Egyptians ruthlessly made the children of Israel serve,