Lamb of God - Hourglass Lyrics Meaning

"Privileged, a chosen few. Blessed with our time in hell. Witness a divine vision, the day we all fell still." tells about how those few people who survive a war are 'blessed' by their experience, so they are able to witness 'hell' (war, a divine vision) and get hindsight of what they saw and experienced.

"Wrath of the warring gods and soon this too shall pass." probably means a person's believe that this 'hell' is a divine retribution for sin by the god and how he hopes that it will end soon.

"God forbid you read the signs. Watch for meaning between the lines. Your trust has been misplaced, believed the lies told to your face. Became another casualty and now it's too late." Probably a sarcastic message to condemn those who kill others by mistakenly interpret God's verses (that is, 'lines') that more and more people are killed (casualty) by this.

"Gehenna has now arrived, no hindsight for the blind." Meanwhile, 'Gehenna' can probably be interpreted as 'the places for the wicked/cursed', or simply as 'hell'. And those who are doubtful ('blind') get no hindsight of what have happened.