Scriptures: Joel 2:31, Matthew 24:29, Luke 21:25 and Revelation 6:12-13. A Blood Moon is a total lunar eclipse. The lunar tetrad is where four lunar eclipses happen six months apart. For example they have happened on April 15, 2014, October 8, 2014, April 4, 2015 and September 28, 2015. The two April eclipses have coincided with important Jewish Festivals. They occurred on Passover! The October and September eclipses occurred during the Festival of Tabernacles. Eight of the tetrads since the 1st century have coincided on Jewish Holidays! The word sign means to reveal the character and the truth of any person or thing. It is a mark or token. It is a memorial, monument or proof. Simply the signs in the sun, moon and stars is a reminder and confirmation of Jesus promises to us! It is a confirmation that His return is on schedule! His promises to us are revealed in the Heavens and on the earth! Whether the star over Bethlehem or the earth growing dark over Calvary His signs are everywhere! Look up for your redemption draweth nigh! Take comfort and trust your yesterday, today and forever with your Christ! Thankyou. James and Hamsa Sasse. GodWhoisGod.com