'Heavy' in the Bible

But a heavy squall came on, and the waves were now dashing into the boat, so that it was fast filling.

“But whoever causes the downfall of one of these little ones who believe in Me—it would be better for him if a heavy millstone were hung around his neck and he were thrown into the sea.

And he taketh with him Peter and James and John, and began to be sore amazed, and to be very heavy;

And when he returned, he found them asleep again, (for their eyes were heavy,) neither wist they what to answer him.