People are interested in angels. If asked, they could give several reasons for that interest. But often those same people are not quite so clear on why they should be interested in the Bible.
The Bible itself answers the question. We should be interested in it because it is no ordinary book. Its own testimony is that it is God's book. Its teachings are true and timeless because its author is the eternal God.
The Lord Jesus proved forever His authority to speak about the authority of Scripture by His own resurrection. This astounding event showed Him to be "the Son of God with power" (Romans 1:4).
The subject of angels gives us plenty of room to be as "greatly mistaken" as the Sadducees. But if we will pay careful heed to Scripture, we can avoid the mistakes and come to the truth.