God's Standard, The Bible
Certainly, we are admonished to be on guard. However, some go to such extremes as to become narrow-minded and closed to some beautiful truths in the name of being careful. What should our role as Christians be in regard to acceptance of a new thought, idea or doctrine? We are told to prove all things, not to reject them because they might be strange or new to us. However, we should not receive them either, until we first prove them. How do we prove things? All true Christians are in agreement that our standard is the Word of God, the Bible. God left us this Book as a reference, standard, or gauge so we could know whether something is good or evil, truth or error, right or wrong. (2 Timothy 3:16-17: "All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness: That the man of God may be perfect, thoroughly furnished unto all good works.'')
One of our major faults as Christians is that we tend to quote men on certain subjects instead of referring to the Book God gave us. We recognize that God gave us men to lead us into the truths of God, but our problem becomes who are the true men of God and who are the false ones that Christ warned us about? Sometimes we tend to evaluate men according to the size of their ministries, their popularity with men, or their endowment of certain gifts, etc.
Check the Fruit
The Lord said in verse 20 of Matthew 7 that we would know them by their fruits. What are these fruits? Galatians 5:22-24 defines them as being the fruit of the Spirit. "But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith, meekness, temperance: against such there is no law. And they that are Christ's have crucified the flesh with the affections and lusts." We are told to look at their lives and see if these fruits are predominant in them and examine if they are living the crucified life. Of course, we must allow for imperfections that have not been overcome yet; but we should readily see the fruit of the Spirit in more abundance than the imperfections. One way we can check this is to notice the words that a man speaks. The Scripture says in Matthew 12:33-35, "Either make the tree good, and his fruit good; or else make the tree corrupt, and his fruit corrupt: for the tree is known by his fruit. O generation of vipers, how can ye, being evil, speak good things? for out of the abundance of the heart the mouth speaketh. A good man out of the good treasure of the heart bringeth forth good things: and an evil man out of the evil treasure bringeth forth evil things.''