13:1 how long. Compare Psalm 90:13; Zechariah 1:12; Psalm 74:10; etc. The poignant question is often raised by suffering believers wanting to see God work. It is found first in Psalm 6:3 and last in Revelation 6:10. Christians today have been anxiously awaiting the return of Christ for many years, and they ask (and even sing!) the same great question. He will come, perhaps today!