guard against false teaching
Acts Chapter 17:11
These were more noble than those in Thessalonica, in that they received the word with all readiness of mind, and searched the scriptures daily, whether those things were so.
Acts Chapter 20:29
For I know this, that after my departing shall grievous wolves enter in among you, not sparing the flock.
Acts Chapter 20:30
Also of your own selves shall men arise, speaking perverse things, to draw away disciples after them.
Romans Chapter 12:2
And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect, will of God.
2 Timothy Chapter 4:3
For the time will come when they will not endure sound doctrine; but after their own lusts shall they heap to themselves teachers, having itching ears;