'Labor' in the Bible

“Writhe and labor to give birth,Daughter of Zion,Like a woman in childbirth;For now you will go out of the city,Dwell in the field,And go to Babylon.There you will be rescued;There the Lord will redeem youFrom the hand of your enemies.

Therefore He will give them up until the timeWhen she who is in labor has borne a child.Then the remainder of His brethrenWill return to the sons of Israel.