'Tons' in the Bible

So Hiram sent ships to him by his servants along with crews of experienced seamen. They went with Solomon’s servants to Ophir, took from there 17 tons of gold, and delivered it to King Solomon.

Then she gave the king four and a half tons of gold, a great quantity of spices, and precious stones. There never were such spices as those the queen of Sheba gave to King Solomon.

The weight of gold that came to Solomon annually was 25 tons,