He built the higher gate - Jotham followed the example of his father in military, no less than in religious, matters (compare the marginal reference with 2 Chronicles 26:9). The “higher” or “upper gate” of the temple is thought to have been that toward the north; and its fortification would seem to indicate fear of an attack from that quarter.
Related Commentaries of 2 Kings 15:35
2 Kings 15:35
35 Howbeit the high places were not removed: the people sacrificed and burned incense still in the high places. He built the higher gate of the house of the LORD.