'Mass' in the Bible

When the feet of the priests who carry the ark of the Lord, the Lord of all the earth, come to rest in the Jordan’s waters, its waters will be cut off. The water flowing downstream will stand up in a mass.”

and the water flowing downstream stood still, rising up in a mass that extended as far as Adam, a city next to Zarethan. The water flowing downstream into the Sea of the Arabah (the Dead Sea) was completely cut off, and the people crossed opposite Jericho.

And the armed men went before the priests who were blowing the horns, and the mass of the people went after the ark, blowing their horns.

And the seven priests with their seven horns went on before the ark of the Lord, blowing their horns: the armed men went before them, and the mass of the people went after the ark of the Lord, blowing their horns.

When I saw among their goods a fair robe of Babylon and two hundred shekels of silver, and a mass of gold, fifty shekels in weight, I was overcome by desire and took them; and they are put away in the earth in my tent, and the silver is under it.

Then Joshua and all Israel took Achan, the son of Zerah, and the silver and the robe and the mass of gold, and his sons and his daughters and his oxen and his asses and his sheep and his tent and everything he had; and they took them up into the valley of Achor.

And over him they put a great mass of stones, which is there to this day; then the heat of the Lord's wrath was turned away. So that place was named, The Valley of Achor, to this day.

So Joshua gave Ai to the flames, and made it a waste mass of stones for ever, as it is to this day.

And he put the king of Ai to death, hanging him on a tree till evening: and when the sun went down, Joshua gave them orders to take his body down from the tree, and put it in the public place of the town, covering it with a great mass of stones, which is there to this day.