'Undermined' in the Bible

And the army of Joab came and besieged Sheba in Abel Beth-maacah, and they built up an assault ramp against the city, and it stood against the outer rampart; and all the people who were with Joab were wreaking destruction to make the wall fall.

But understand this: If the head of the house had known what time of the night the thief was coming, he would have been on the alert and would not have allowed his house to be broken into.