Amos 9:8 Behold, the eyes of the Lord GOD are upon the sinful kingdom, and I will destroy it from off the face of the earth; saving that I will not utterly destroy the house of Jacob, saith the LORD.

This prophecy was fulfilled in 70 A.D.

Compare to...
Matthew 24:21-22 For then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be. And except those days should be shortened, there should no flesh be saved: but for the elect's sake those days shall be shortened.

Compare the surrounding scriptures from Amos with their fulfillments in the New Testament.

Compare Amos 9:9 with Matthew 3:12
Compare Amos 9:11 with Mark 11:10
Compare Amos 9:12 with John 10:16 and Matthew 12:21
Compare Amos 9:14 with Ephesians 4:8

See also "The significance of 70 A.D."