Who are the 144,000 in Revelation 7:1-8?

They are a group mentioned in Revelation, often interpreted as a special group of faithful followers or witnesses during the end times.

Are the trumpet judgments literal or symbolic (Revelation 8; 11)?

The judgments are often understood as symbolic representations of divine judgments, though some interpret them literally.

What is the mark of the beast (Revelation 13:18)?

The mark of the beast is described as a symbol or sign associated with allegiance to the beast, often interpreted as a literal mark or number.