'Sixth' in the Bible

When the Lamb broke the sixth seal I looked, and there was a great earthquake, and the sun became as dark as sackcloth, and the whole disc of the moon became like blood.

The sixth angel blew his trumpet; and I heard a single voice speaking from among the horns of the golden incense altar which is in the presence of God.

It said to the sixth angel--the angel who had the trumpet, "Set at liberty the four angels who are prisoners near the great river Euphrates."

The sixth angel poured his bowl into that great river, the Euphrates; and its stream was dried up in order to clear the way for the kings who are to come from the east.

As for the foundation-stones of the city wall, which were beautified with various kinds of precious stones, the first was jasper, the second sapphire, the third chalcedony, the fourth emerald, the fifth sardonyx, the sixth sardius,