>> “I don’t ignore the Old Testament, but as a general rule I think any Christian should start worrying if they are building cornerstones on verses outside of the New Testament.” <<
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Everything Yeshua presented to us is from the ancient scriptures.
There is nothing given in the NT that is not simply a repeat of the OT.
Paul stated in Hebrews 4 that the gospel that he preached is the gospel that Moses preached.
Is everything that you think to be true of the NT possibly completely false?
Becoming Jewish, and following Torah are two completely different and essentially opposite propositions.
Judaism does not follow Torah in any significant way.
Judaism is Phariseeism , which Yeshua completely denounced in Matthew 15, and 23. It is following the false commandments of men, just like the catholic ‘church.’
Yeshua stated in Matthew 5 that Torah remains his way as long as the Earth and heavens exist.
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Lest I totally kick out one of the legs holding up your faith. I’m going to stop pointing out where Jesus contradicted the old testament teaching, even of Moses.
You obviously are very serious about literal observance of the old testament, except perhaps when you aren’t.