'Lighten' in the Bible

A light to lighten the Gentiles, and the glory of thy people Israel.

But, as the storm was still violent, the next day they began to lighten the ship;

When they had eaten enough, they began to lighten the ship by throwing the grain overboard into the sea.

And the city had no need of the sun, neither of the moon, to shine in it: for the glory of God did lighten it, and the Lamb is the light thereof.