'Heavy' in the Bible

So the Egyptians placed supervisors over them, oppressing them with heavy burdens. The Israelis built the supply cities of Pithom and Rameses for Pharaoh.

Years later, after Moses had grown up, he went out to his own people, and took notice of their heavy burdens. He saw an Egyptian beating up a Hebrew, one of his own people.

There was very heavy hail, and lightning was flashing continuously in the midst of the hail. There had not been anything like it in the land of Egypt since it had become a nation.

When Moses' hands became heavy, they took a stone and put it under him, and he sat on it. Aaron and Hur supported his hands, one on one side and one on the other, and so his hands were steady until the sun went down.

You will certainly wear yourself out, both you and these people who are with you, because the task is too heavy for you. You cannot do it by yourself.

When morning came on the third day, there was thunder and lightning, with a heavy cloud over the mountain, and the very loud sound of a ram's horn. All the people in the camp trembled.