Your actions speak louder than your words!
Isaiah 29:13 Wherefore the Lord said, Forasmuch as this people draw near me with their mouth, and with their lips do honour me, but have removed their heart far from me, and their fear toward me is taught by the precept of men:
(The people honor me with their lips, but not their hearts and deeds. They worship me with nothing but man-made rules, rituals, and traditions. Looks so holy from the outside when they go through the motions, but their hearts are not in it). [Proverbs 30:6, Matthew 15:7-9, Mark 7:6-8].
Matthew 7:21 Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
(You must be doing the will of God, teaching the truth of His Word. Not the will of man. The question is; Are they obeying God, and doing His will in deed or in words only)?
Matthew 7:22 Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works?
(At judgment, many will say they are of Christ, but God did not send these false teachers and play actors).
Matthew 7:23 And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.
(God will reject and expose them for their evil deeds and false teachings).
1 John 3:18 My little children, let us not love in word, neither in tongue; but in deed and in truth.
(Actions speak louder than words, be a doer of His word; be a good example for others).
1 John 4:1 Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world.
(Don't believe everything you hear just because someone says it is a message from God. Check it out in the word of God yourself, verify it. There are a lot of false prophets and teachers in the world. Be familiar with God's Word and you will not be deceived. Remember that all wisdom comes from God, Proverbs 1:7).
1 John 4:2 Hereby know ye the Spirit of God: Every spirit that confesseth that Jesus Christ is come in the flesh is of God:
(Here is how you tell. If the message is from the Holy Spirit it will agree with the Word of God. The main message being that Jesus Christ, God's only begotten Son, actually became man in a human flesh body. He would then be crucified for our sins, defeating death through the resurrection so that we may have eternal life). [Foretold in the old testament Psalms 22, 1,000 years before the crucifixion].
Many may claim to be followers of Christ and preach His truths, many may claim to believe every truth in the word of God; but this will do our neighbor no good unless our belief is carried into our daily lives (become doers of His word, not just hearers of His word, James 1:22-23). Our profession may be as high as heaven, but it never will save ourselves nor our fellow men unless we are true Christians. A right example will do more to benefit the world than all our lip service of being Christians. See Matthew 7:16-20 also. Become a fruit inspector, not a judge; a persons actions will tell you more than their words.