Eschatology

The Great Doctrines of the Bible A. The Second Coming of Christ

It is claimed that one out of every thirty verses in the Bible mentions this doctrine; to every one mention of the first coming the second coming is mentioned eight times; 318 references to it are made in 216 chapters; whole books (1 and 2 Thess., e. g.) and chapters (Matt. 24; Mark 13; Luke 21, e. g.) are devoted to it.

Lexham Survey of Theology The Doctrine of the Last Things

But the doctrine of last things puts the capstone on everything one does in Christian doctrine, because nothing ever really makes sense until we see how it turns out.