What Does The Blood Moon Mean In The Bible

"I watched as he opened the sixth seal. There was a great earthquake. The sun turned black like sackcloth made of goat hair, the whole moon turned blood red, and the stars in the sky fell to earth, as figs drop from a fig tree when shaken by a strong wind." - Revelation 6:12-13

A blood moon signifies a total lunar eclipse when the earth comes between the sun and the full moon so that the sun's rays do not light up the moon.

In the Book of Revelation, the blood moon is the precursor to the wrath of God poured out upon sinful humanity. It is the sixth seal out of the seven seals mentioned in the book.