Explain the concept of death and salvation in Christianity.

Wow. You certainly ask a big question. Probably you should ask a
theologian rather than me! Well, let me put together the best answer I
can anyway, and you can look further if you feel you need to.

The Bible actually describes at least two kinds of death, probably
three and perhaps more. There is physical death, which is the moment when
our physical bodies reach the point that they cease to function to support
life. This is the normal dictionary definition of death. Romans 5:12
describes how physical death for human beings came into the world through
the sin of Adam. Hebrews 9:27 makes it clear that it is man’s destiny to
die once and after that to face judgement. So much for reincarnation!

There is also spiritual death. This is the state of being
spiritually separated from God. In Ephesians 2:1, Paul reminds the
believers that at one time they had been dead in their transgressions and
sins, in which they formerly lived. God describes the process of being
saved through the blood of Jesus Christ as passing from death to life.
Romans 6:1-14 describes how in baptism, one participates in the death of
Jesus Christ, puts to death the old sinful nature, and is raised to live a
new life.

Then there is the “second death” which is described in Revelation
21:8. Here, John describes those who are sent into the lake of sulfur as
experiencing the second death. Presumably, this is a description of those
who are thrown into Hell. Revelation 20:6 tells us that those who are
raised with Christ avoid the second death.

What one learns from all this is that salvation through Jesus
Christ saves one both from spiritual death, which is separation from God
in this life and from the “second death” which is being sent into Hell to
experience eternal separation from God. Anyone who grasps these concepts
who has even a grain of sanity will want to learn about this salvation and
how to be saved. Salvation is gained through putting one’s faith in the
saving blood of Jesus Christ (Romans 3:21-26), through repenting on one’s
sins and being baptized in water into Christ (Acts 2:36-38).

John Oakes