'Again' in the Bible

Also, the sun rises and the sun sets;And hastening to its place it rises there again.

All the rivers flow into the sea,Yet the sea is not full.To the place where the rivers flow,There they flow again.

Then I looked again at all the acts of oppression which were being done under the sun. And behold I saw the tears of the oppressed and that they had no one to comfort them; and on the side of their oppressors was power, but they had no one to comfort them.

Then I looked again at vanity under the sun.

I again saw under the sun that the race is not to the swift and the battle is not to the warriors, and neither is bread to the wise nor wealth to the discerning nor favor to men of ability; for time and chance overtake them all.

Cast your bread on the surface of the waters, for you will find it after many days.