Timing of the 3 Angels' Messages and the Judgment

"It is not a coincidence that at the time of Christ's transition from the Holy to the Most Holy Place—1844---the present-truth message linked with the transition came to light. The three angels' messages of Revelation 14 began to be preached only as the truth of Christ's

"second apartment" ministry came to be understood, because the three angels' messages are tied to that second phase of Christ's work.
The messages that the Bible portrays as God's final call to the world, messages for "every nation, and kindred, and tongue, and people" (Revelation 14:6) and which contain the most solemn warning in God's word (vv. 9-11), are given in the setting of the judgment in progress: "for the hour of his judgment is come" (v. 7)." 

Clifford Goldstein