What are the first 4 books in the New Testament

The first four books (Matthew, Mark, Luke, and) of the New Testament are commonly referred to as the gospels.

Matthew, Mark, Luke and John

If you're asking for which 4 book were WRITTEN first:

Matthew, 1 Thessalonians, Galatians, and 2 Thessalonians

answer: ensure protection from communism

explanation:

the north atlantic treaty was largely dormant until the korean war initiated the establishment of nato to implement it, by means of an integrated military structure: this included the formation of supreme headquarters allied powers europe in 1951, which adopted the western union's military structures and plans.

warfare was the primary means of cultural transmission in both regions.