The construction of the Temple was a massive, carefully orchestrated project that required international cooperation and meticulous off-site preparation. Long before any materials reached the building site, the raw stones quarried from the mountains and the freshly cut timber had to be shaped and refined. Artisans worked together to chisel, smooth, and beautify the materials [מלבי״ם, מצודת ציון]. This labor was a close collaboration between expert architects and craftsmen from Israel and the skilled workers sent by Hiram from his own land [רלב״ג, רד״ק, מצודת דוד].
They were joined by an additional group of specialists. The primary approach among commentators is that these workers came from the nation or city of Gebal, a place famous for its master stonecutters and builders [רש״י, מצודת ציון, רלב״ג]. Alternatively, some suggest that their title refers to a specific profession rather than a location. In this view, they were either experts in building walls or specialized artisans tasked with cutting the stones to the exact, precise measurements required for the structure [רד״ק].
The ultimate goal of this intense labor was total preparation [רש״י]. The craftsmen worked the wood and stones to such a flawless standard that every single piece brought to the Temple Mount fit perfectly into its designated spot. Absolutely no further adjustments or shaping were needed on site. Because of this careful off-site preparation, the sound of iron tools was never heard inside the Temple during its construction, reflecting the complete perfection of the building [מלבי״ם, רלב״ג].
Beyond practical efficiency, having all the materials completely prepared in advance reveals a layer of divine providence. With everything ready, the builders actually could have finished the Temple much sooner. However, the completion was intentionally delayed so that the building would be finished exactly on the special day designated by God [אהבת יהונתן].