Saying EVERYTHING MUST be in the Bible is a Protestant tradition.
Do you reject the Trinity? That’s not in the Bible.
Did the Apostles die? It doesn’t say they did. The story trails off in Acts. Does that mean they’re immortal?
Do you go to a church building for your services? A building is not in the Bible, heck driving in a car isn’t listed either. See how that works?
In fact the Bible says that not everything he said and did was written there, nor could it be. There are men that have teaching authority for this reason.
It’s odd that you fight against Mary and the Crucifix. It shows more of an animus against anything Catholic. And it’s odd that the article was about the benefits of the Crucifix but you use to rail against the Catholic Church.
The Bereans in Acts 17 I mentioned, were not searching the scriptures to see if worshiping in a church building was in the Bible, or if a certain mode of transportation was in the Bible (you said cars).
The Bereans were anti-paganism Jews. They would have vetted the idolatry practised by Papists as smacking of paganism.
Papists are irritated with Protestants, like the Bereans, who see the Papacy as a paganized Christian institution.
“Protestantism is an effort to restore primitive Christianity free from all paganism.” Halley’s Bible Handbook, p. 758
Do you think Jesus went to that cross to give your soul (behavior mechanism) eternal life? The Bible does tell you that it is the spirit of the born again in which puts His eternal life and abides there ... so the Apostles are eternally alive, awaiting their reunion with Earth where they will be given new, fit for eternal physical living, where the already eternally alive spirit will dwell in the Presence of The Lord.
I know of no Protestant tradition that says “everything must” be in the Bible - that’s not what Sola Scripture means. Further, the Trinity is clearly taught by scripture and scripture also records the deaths of the Apostles Judas and James.