... without any prior knowledge of it or exposure to it, you would think that Christianity was an apocalyptic/doomsday/end times cult, not a system to get out of hell for free.

      See:

            Matthew 24

            Luke 21:8-28

            I Corinthians 15:50-54

            I Thessalonians 4:15-17

            II Thessalonians 2:1-12

            I Peter 4:7

            II Peter 3:10

            The entire book of Revelation.