'Hardest' in the Bible

When her labor was at its hardest, the midwife said to her, "Don't be afraid, for you are having another son."

And made their lives bitter with hard work, making building-material and bricks, and doing all sorts of work in the fields under the hardest conditions.

He enabled him to travel over the high terrain of the land, and he ate of the produce of the fields. He provided honey for him from the cliffs, and olive oil from the hardest of rocks,

And they made their hearts like the hardest stone, so that they might not give ear to the law and the words which the Lord of armies had said by the earlier prophets: and there came great wrath from the Lord of armies.