“But, beloved, remember ye the words which were spoken before of the apostles of our Lord Jesus Christ;”
King James Version (KJV)
1:17 By the apostles - He does not exempt himself from the number of apostles. For in the next verse he says, they told you, not us.
Jude 1:17 Remember ye the words which were spoken before of the apostles of our Lord. The language implies that Jude was not an apostle.