Mark 16:16-17 that you refer to is not among various versions of the original text. Many scholars believe this text was added later. Another qualification of scripture is that it’s supports other scriptures. Mark 16:16-17 that you’re referring to, is unique within the the Bible. While it may be God’s word, it is suspect. Many translations include this section as a footnote.
I figured you’d come back with that.
Not my reality.
If one plays that game, where does one stop?
Like Jefferson who threw out lots of verses he decided were to uncomfortable or nonsense TO HIM?
I believe that God was well able to protect His Word and CAUSE TO BE INCLUDED whatever He wanted . . . and/or to be reinserted as He wanted.
In any case, millions of Christians around the world are proving the validity of those Scriptures 24/7/365.
Satan has not changed.
Human need and sinfulness has not changed.
Holy Spirit has not changed.