The first part is the investigative judgment, which takes place in the heavenly sanctuary, God the Father sitting in judgment.
The second part is the execution of the judgment, and is committed wholly to Christ, who comes to our earth to accomplish this work. Verily, verily, I say unto you, The hour is coming, and now is, when the dead shall hear the voice of the Son of God: and they that hear shall live. And hath given Him authority to execute judgment also, because He is the Son of man. To execute judgment upon all, and to convince all that are ungodly among them of all their ungodly deeds which they have ungodly committed, and of all their hard speeches which ungodly sinners have spoken against Him.
John 5:25,27; Jude 14,15. I."
J.N. Andrews