The good news of the Gospel is that a person can have complete forgiveness for their sins, apart from anything they do, by their faith and trust in the person and work of Jesus Christ. This faith reconciles them to God (Romans 5:9-11) resulting in a present peace that the Believers has with God (Romans 5:1). They are transferred from the Kingdom of Darkness into the Kingdom of Light (Colossians 1:13-14) by being adopted into God’s family (Ephesians 1:5, Galatians 4:5-7, John 1:12). It’s by being “in Christ” that we can say there is therefore now no condemnation (Romans 8:1) and that we have peace with God (Romans 5:1). We are perfectly secure and righteous in Jesus, despite our shortcomings, struggles, and war with our sin. Believers have eternal life right now (John 4:24; 1 John 5:13) and all of our sins have been forgiven (Colossians 2:13).
Furthermore, the Bible teaches that Jesus put sin away at the cross (Hebrews 9:26) and He isn’t dealing with sin anymore. He is ruling and reigning from Heaven as all of His enemies are being made His footstool (Hebrews 10:13, 1 Corinthians 15:25, Psalm 110:1).
The Investigative Judgment distorts this by saying your sins are still being dealt with in Heaven by Jesus who is investigating to see who is and isn’t worthy of receiving the benefits of His atoning sacrifice. Despite the Bible saying there is no condemnation for those who are in Christ (Romans 8:1), this doctrine holds that lots of things can still condemn you, especially the Law. For it’s the Law that will condemn all of those in this judgment that aren’t found spotless.
Despite the cleverly devised wording and rewording of this teaching over the decades, it fundamentally teaches that one’s behavior and performance are the ultimate determiner of one’s salvation—not faith in the finished work of Jesus and Him alone. It doesn’t just teach obedience is a fruit of having been saved, but that perfect obedience is a must in order to eventually be saved.