Judgment is based on what God says, not the "church" you have the authority backwards.
John 12:48He who rejects Me, and does not receive My words, has that which judges him—the word that I have spoken will judge him in the last day.
James 2:10 For whoever shall keep the whole law, and yet stumble in one point, he is guilty of all. 11 For He who said, “Do not commit adultery,” also said, “Do not murder.” Now if you do not commit adultery, but you do murder, you have become a transgressor of the law. So speak and so do as those who will be judged by the law of liberty.
No wonder why we see the ark of God's Covenant at the last Trumpet for Judgement that holds the Ten Commandments- not a jot or tittle changed because God does not makes mistakes we do by not fully trusting Him, not accepting His invite Isa56:6 God said Remember- man teaches the opposite.
Rev 11:18The nations were angry, and Your wrath has come, And the time of the dead, that they should be judged, And that You should reward Your servants the prophets and the saints, And those who fear Your name, small and great, And should destroy those who destroy the earth.”
19Then the temple of God was opened in heaven, and the ark of His covenant was seen in His temple. And there were lightnings, noises, thunderings, an earthquake, and great hail
The ark of His covenant is not empty- it holds the Ten Commandments- God's Testimony Exo25:16 Jesus called it the Word of God.
No wonder we are told
Ecc 12:13Let us hear the conclusion of the whole matter: Fear God and keep His commandments, For this is man’s all
14For God will bring every work into judgment, Including every secret thing, Whether good or evil
Yes, Judgment is based on what God says/wills, and He wills everyone to accept the Gospel (Rom. 1:16-17, 1Tim. 2:3-4) and interpret the OC in light of the NT revelation (Heb. 7:11-10:1).
In John 12:48, the word that judges is what Jesus taught regarding GRFS in the rest of John:
John 3:1-15. Jesus told a Pharisee named Nicodemus that he must be born again to see the kingdom of God, which Nick took to mean being reborn physically, but Jesus guided him to understand spiritually by saying that a person must not only be born of water (amniotic fluid) but also of the Spirit. Procreation yields a physical person, but the Spirit creates a spiritual child of God.
When Nick asked how spiritual rebirth is possible, Jesus replied that he, the Son of Man (Messiah), testifies to what he has seen in heaven, and then he shared that rebirth occurs when a person believes in him as God’s Savior whose death atones for humanity’s sins (cf. Num. 21:9, Isa. 53:3-12, 61:1-8).
John 3:14-21. Jesus said that the reason God sent His only Son/the Son of Man/Messiah to be crucified/lifted up was because He loved everyone in the world and wanted to to provide salvation/eternal life in heaven to everyone/whoever believes in him. Thus, everyone who believes in him as Messiah/God the Son shall not die permanently but be resurrected to heaven.
However, everyone who rejects God’s provision/grace/Son is self-condemned, because they chose to love darkness/evil rather than God’s Light/Truth/Word. Evildoers hate divine light, because it exposes their evil deeds that they love, but those who love the Lord desire for His love to be reflected by what they do.
John 5:16-30. The Jews persecuted Jesus because he disobeyed Sabbath Law by healing the crippled man. Jesus said His heavenly Father works every day and so he is also working, which made the Jews want to kill him for making himself deity by calling God his Father. These two offenses are combined when Jesus said the Son of Man (himself) is Lord of the Sabbath (Matt. 12:8, Mark 2:28, Luke 6:5). Saying the Father works every day contradicted the Sabbath Law (Exo. 20:8-11), which was based on the statement (in Gen. 2:2-3) that God rested on the seventh day after completing His creation.
Jesus continued by saying that whoever hears and believes the Son’s message and God crosses from death and condemnation to eternal life (again echoing John 3:16), because the Father is the source/giver of life (Gen. 2:7, Acts 17:25) and grants the Son life-giving power and authority to judge because he is the Son of Man (John 5:22, 8:15-16, Acts 10:42, cf. Heb. 9:27-28).
John 6:28-64. The people asked Jesus, “What must we do to do the works God requires?” Jesus replied, “The work of God is to believe in the one he has sent.”
And so forth...
Jam. 2:10 is in the same vein as Rom. 3:23: All are sinners. Disobeying the Sabbath law is not in the list of moral sins that are cited.
Aren't you going to be surprised when the Ark is opened in heaven and it contains the Gospel!
May I suggest you change your title to "GospelBlessing"?