Genesis 49:15

He saw that a resting place was good , and that the land was pleasant , so he bowed his shoulder to bear , and became a servant at forced labor .

When he sees how good is his resting place and how pleasant is his land, he will bend his shoulder to the burden and submit to forced labor.

And he saw that rest was good, and the land that it was pleasant; and bowed his shoulder to bear, and became a servant unto tribute.