You are wrong on both cases. First of all, Jesus warned about following traditions that lead us AWAY from God, not ALL traditions (by which, I presume, YOU mean unwritten traditions). Don't you recognize your own "traditions", such as Sola Fide and Sola Scriptura?
And secondly, the Scripture does warn us about reading it without the Church:
"even as our beloved brother Paul also according to the wisdom given unto him hath written unto you; As also in all [his] epistles, speaking in them of these things; in which are some things hard to be understood, which they that are unlearned and unstable wrest, as [they do] also the other scriptures, unto their own destruction." 2 Peter 3:15b-16
Incorrect Scripture interpretation DESTROYS!!!
The Lord's battle with Satan in the desert clearly shows that Scripture can be used for good or bad purposes.
Those who hold false views of things were always meant to hold false views.
Really??!!! What do you think of your past views that were faulty? Or are you still wrong?!! Seriously, though, that fatalistic attitude won't do with me. I held to false views before, and now I don't! [to include views that we agree on, such as Christ's resurrection]
God separates the sheep from the goats
...in heaven at the final judgment (Mat 25), not now. Or, perhaps, you prefer the wheat and the weeds?
It is God who gives us our knowledge and understanding
Well, I am happy to see we still agree on this!
Regards
As far as our Lord Jesus discussions with Satan, if you'll recall Satan used incomplete verses or changed the text (as is typical). For example:
Matt 4:6 And saith unto him, If thou be the Son of God, cast thyself down: for it is written, He shall give his angels charge concerning thee: and in [their] hands they shall bear thee up, lest at any time thou dash thy foot against a stone.
However, that's the point of growing in Christ.