'Gaps' in the Bible

When Sanballat, Tobiah, and the Arabs, Ammonites, and Ashdodites heard that the repair to the walls of Jerusalem was progressing and that the gaps were being closed, they became furious.

Ye have not gone up into the gaps, neither made up the hedge for the house of Israel to stand in the battle in the day of the LORD.

Each of you will go straight through the gaps in the walls; you will be thrown out toward Harmon." The Lord is speaking!

In that dayI will restore the fallen booth of David:I will repair its gaps,restore its ruins,and rebuild it as in the days of old,