70 A.D. & Second Coming in Luke 21: Could you help me sort out how we know which parts to apply to the "Second Coming" vs "A.D.70" (Destruction of Jerusalem & the temple)? [Luke 21:5-7, Luke 21:20, Luke 21:25, Mark 13, Matthew 24:2-5, Zechariah 14, Isaiah 19:1, 2 Peter 3, I Corinthians 15, I Thessalonians 4].