'Hadn't' in the Bible

There was one man from Zorah, from the family of the descendants of Dan, whose name was Manoah. Since his wife was infertile, she hadn't borne children.

On the seventh day, before sunset, the men of the city said to him:What is sweeter than honey?What is stronger than a lion?So he said to them:If you hadn’t plowed with my young cow,you wouldn’t know my riddle now!

They discovered among the inhabitants of Jabesh-gilead 400 young virgins who hadn't had sex with a man, and they brought them to the encampment at Shiloh in the territory of Canaan.