'Sixth' in the Bible

I looked when He (the Lamb) broke open the sixth seal, and there was a great earthquake; and the sun became black as sackcloth [made] of hair, and the whole moon became like blood;

Then the sixth angel sounded [his trumpet], and I heard a solitary voice from the four horns of the golden altar which stands before God,

saying to the sixth angel who had the trumpet, “Release the four angels who are bound at the great river Euphrates.”

Then the sixth angel poured out his bowl on the great river, the Euphrates; and its water was dried up, so that the way would be prepared for [the coming of] the kings from the east.

the fifth, sardonyx; the sixth, sardius; the seventh, chrysolite (yellow topaz); the eighth, beryl; the ninth, topaz; the tenth, chrysoprase; the eleventh, jacinth; the twelfth, amethyst.