'Hard' in the Bible

Is anything too difficult or too wonderful for the Lord? At the appointed time, when the season [for her delivery] comes, I will return to you and Sarah will have a son.”

Then they journeyed from Bethel; and when there was still some distance to go to Ephrath (Bethlehem), Rachel began to give birth and had difficulty and suffered severely.

When she was in hard labor the midwife said to her, “Do not be afraid; you now have another son.”