It is evident that there can be some variance between what people may claim and the factual truth.
Since God who inspired the holy Bible "cannot lie" (Titus 1:2), His inspired expressions on this subject are the most authoritative, we benefit by adjusting our views to harmonize with the Bible. If we are uncertain that the Bible is completely reliable, accurate and inspired then we should first seek to establish this.
A very good method for determining what God's view is on any subject is to search a Bible index and consider (in proper context) all the scriptures dealing with that particular subject.
Personally reading his word the bible in prayerful and sincere personal study will lead to accurate knowledge and the ability to confirm this matter for one's self.
A comprehensive Bible index search and cross-referencing regarding Jesus verifies his identity. It is as summarized by John:
"...the Word became flesh and resided among us, and we had a view of his glory, a glory such as belongs to an only-begotten son from a father; and he was full of undeserved kindness and truth." (John 1:14)
Other scriptures reveal Jesus as God's heavenly son, the "master worker" through whom he created all other things, the ancient Word" of God through whom God spoke to his covenant people Israel, the "prince" of Israel through whom God led and protected his faithful people; the promised 'seed' which would through his life sacrifice repurchase imperfect humanity from Adamic sin, and the king of God's heavely kingdom which would vanquish corrupt human government, resurrect the dead and restore paradise and human perfection during the millenial reign. Colossians 1:15-17; John 17:5; Ephesians 1:9, 10; Matthew 1:23; 6:9, 10; Mathew 19:28; John 18:36; Daniel 2:44; 7: 14, 18; Revelation 14: 1-4; 5:9,10; 20:6; 21:2-4
"the Triumphant One (Excellency, Eminence" of Israel will not prove false" (1 Samuel 15:29) is a prophetic of Jesus the messiah and king of God's kingdom who was born in the lineage of king David. (Luke 1: 32, 33)
Any claims that actually contradict Bible prophecy or accounts inspired by God simply have no effect or bearing on the factual truth or on true worship. It is better not to pay attention to claims that are not in harmony with divinely inspired scripture but to verify the truth for one's self as dedication to God is personal.
Hence the advice to Titus was " ...paying no attention to ... fables and commandments of men who turn themselves away from the truth" (Titus 1: 14) , regardless of their origin. Rather, as Jesus own prayer to His heavely father regarding his disciples was: "Sanctify them by means of the truth; your word is truth" (John 17:17)
It seems you are thus correct in identifying the variance of claims that contradict to Bible truth because doing so promotes an "accurate knowledge" of God, and such is the 'knowledge that leads to everlasting life' (John 17:3)
P