One of the reasons why Sennacherib could not enter Jerusalem and conquer it as he did to Samaria was that

According to the Bible, one of the reasons why Sennacherib, the king of Assyria, could not conquer Jerusalem as he did to Samaria was that thousands of his soldiers miraculously died overnight. The story is recounted in the book of 2 Kings and the book of Isaiah in the Old Testament. According to the account, Sennacherib sent his army to besiege Jerusalem, but during the night, an angel of the Lord struck down 185,000 soldiers in the Assyrian camp. As a result, Sennacherib was forced to withdraw his army and return to his own country. This miraculous event was seen as a divine intervention on behalf of Jerusalem and the people of Judah. Therefore, the reason why Sennacherib could not conquer Jerusalem was due to a supernatural event that occurred in the Assyrian camp.