What does 2 Timothy 3:7 mean?

In addition to the two concerns of "weak women" who were being taken advantage of by false teachers in the previous verse, Paul says these women were "always learning" but were "never able to arrive at a knowledge of the truth." This refers to those who are always seeking the newest, latest, greatest spiritual teaching. In modern terms, this is sometimes referred to as a person who is "so open-minded that their brains have fallen out." At some point, a person needs to recognize truth and accept it, rather than constantly bouncing from one fad to the next.

This last description of false teachers in verses 6–7 depicts one of the lowest acts that could be taken. They took advantage of women in their own homes, deceiving them with false teachings and leading them into further sin. True teachers of God's Word were to treat "older women as mothers, younger women as sisters, in all purity" (1 Timothy 5:2). Perhaps this was why 2 John 1:10–11 taught about false teachers: "If anyone comes to you and does not bring this teaching, do not receive him into your house or give him any greeting, for whoever greets him takes part in his wicked works."