“There will be only one return of Christ, His second coming, that is it.”
You’re right. You’re absolutely right.
Here is the Rapture:
See 1 Thessalonians 4:1-18
http://biblehub.com/drb/1_thessalonians/4.htm
And this is Christ’s Second Coming:
See Revelation 19:1-21
http://biblehub.com/drb/revelation/19.htm
These are two distinctly separate events.
If so, where do you find the statement in the Bible saying this? We know Jesus made no such statement in Matt. 24, where did Paul say such? Though Paul spoke of the catching away (the rapture)in 1 Thess. 4, he said nothing about this being before the tribulation, nor there being two events, a two stage affair.
Inferences are not sufficient for something as important as this, we need a clear statement somewhere using the language you used, "the rapture is one event, the 2nd coming is a distinctly separate event.