I Corinthians 3:18

Let no man deceive himself. If any man among you seemeth to be wise in this world, let him become a fool, that he may be wise (KJV)

Then: Other translations just out and out say "Stop!" Corinthians can't keep on with their self-delusions of "We're better than you" wisdom. The only real way to be wise is to strip their minds of all they think they know and submit to the teachings of Christ. Baker (p. 59) calls this a rhetorical formula of the present imperative in the negative which Paul intently uses.

Now: Parents always look for the wording, tone, and action which will get children to behave instantly. Adults need to self-educate themselves as ways to improve their own actions in serving Christ. Having a one-on-one personal conversation with the Holy Spirit is far better than a private or public rebuke from fellow believers. Taking time for personal spiritual examination is essential.

Extra Source: Cornerstone Biblical Commentary 1 Corinthians (William Baker), 2 Corinthians (Ralph Martin & Carl Toney), ed. by Philip Comfort. Carol Stream: Tyndale House Publishers, c2006.