Verses with the word toil in the Old Testament (2 verses):

Genesis 5:29
And he called his name Noah, saying, This same shall comfort us concerning our work and toil of our hands, because of the ground which the LORD hath cursed.

Genesis 41:51
And Joseph called the name of the firstborn Manasseh: For God, said he, hath made me forget all my toil, and all my father's house.