I think when we bring 'pride' into this discussion... if we shouldn't be 'proud' (which we are to only boast in Christ) but instead humble ourselves to the teachings of others and not think for ourselves in any way (going against 'study to shew thyself approved') couldn't we be led astray by false prophets?
Hebrews 3:12
Take
heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God.
Titus 1:14
Not giving
heed to Jewish fables, and commandments of men, that turn from the truth.
1 Timothy 4:16
Take
heed unto thyself, and unto
the doctrine; continue in them: for in doing this thou shalt both save thyself, and them that hear thee.
1 Timothy 4:1
Now the Spirit speaketh expressly, that in the latter times some shall depart from the faith, giving
heed to seducing spirits, and doctrines of devils;
1 Timothy 1:4
Neither give
heed to fables and endless genealogies, which minister questions, rather than godly edifying which is in faith: so do.
Galatians 5:15
But if ye bite and devour one another, take
heed that ye be not consumed one of another.
1 Corinthians 8:9
But take
heed lest by any means this liberty of yours become a stumblingblock to them that are weak.
1 Corinthians 3:10
According to the grace of God which is given unto me, as a wise masterbuilder, I have laid the foundation, and another buildeth thereon. But
let every man take heed how he buildeth thereupon.
Luke 21:34
And take
heed to yourselves, lest at any time your hearts be overcharged with surfeiting, and drunkenness, and cares of this life, and so that day come upon you unawares.
Luke 17:3
Take
heed to yourselves: If thy brother trespass against thee, rebuke him; and if he repent, forgive him.
Luke 11:35
Take
heed therefore that the light which is in thee be not darkness.
Mark 8:15
And he charged them, saying, Take
heed, beware of the leaven of the Pharisees, and of the leaven of Herod.
Matthew 6:1
Take
heed that ye
do not your alms before men, to be seen of them: otherwise ye have no reward of your Father which is in heaven.