Great question!
BTD said "So what do you do when you have two people who claim revelation from God, but they contradict each other? Which is correct? They can't both be, if God and His Holy Spirit is not divided. Upon what standard of truth will you decide?"
1. "if God and His Holy Spirit is not divided." Neither God nor the Holy Spirit are divided rather humans are divided on their interpretations of God and the Holy Spirit. The overwhelming witness of Scripture is that God is love and by the Holy Spirit we know that love.
Psalm 143:10 "Teach me to do your will, for you are my God. Let your good
spirit lead me on a level path.
Love is not divided. God is love .
2. You ask, "Upon what standard of truth will you decide?" Let I John 4:
7 Beloved, let us love one another, because love is from God; everyone who loves is born of God and knows God.
8 Whoever does not love does not know God,
for God is love."The standard of truth is that which reveals God's love. All other standards are secondary and judged by love.J3. esus reduced the commandments to two Matthew 22: "37 Jesus replied: "'Love the Lord your God with all your heart and with all your soul and with all your mind.'
38 This is the first and greatest commandment.
39 And the second is like it: 'Love your neighbor as yourself.'"
Then this note by Jesus "40 All the Law and the Prophets hang on these two commandments."
I would suggest all interpretation of scripture rests on these two commandments.
If any belief or dogma or interpretation falls outside of the love commandment then it is false.