Note that Jude (who may have been named Judas—name changed so as to not confuse him with that other Judas who betrayed Christ) used a quote from the Book of Enoch —so the scriptures used by Jude and Jesus included this strange work. It was pulled from the Bible but rediscovered in Ethiopia—in their Coptic Bible. He was a Brother (or half brother if your a Roman Catholic) to Jesus but didn’t follow him until his death. Then became an apostle, with his brother James, he was mighty in the faith.
Thanks for the added information. We must all avoid living a nominal Christian life, but must “contend for the faith.” These are the times that try men’s souls. God’s desire is that we “build ourselves up in our most holy faith and pray in the Holy Spirit, keeping ourselves in His love as we wait for the mercy of Jesus to bring us to eternal life.” The Word of God never fails.
What's that mean? A blood relationship does not change by another persons religion.
Jude is also called Thaddeus in Matthew 10:3 and Mark 3:18.
He was a Brother (or half brother if your(sic) a Roman Catholic) to Jesus
Lower case brother to the linguistic literalist crowd. Scripture teaches, unambiguously, that Jude was the brother of James(the less) and Joseph and the son of Cleophas-(Alphaeus) and the other Mary of Matthew 27:56,61, 28:1 and John 19:25, not the Blessed Virgin Mary.