Introduction: The phrase, doctrine of Christ, is found three times in the Bible. Two times in 2 John 1:9Whosoever transgresseth, and abideth not in the doctrine of Christ, hath not God. He that abideth in the doctrine of Christ, he hath both the Father and the Son.
See All... and once in Hebrews 6:1Therefore leaving the principles of the doctrine of Christ, let us go on unto perfection; not laying again the foundation of repentance from dead works, and of faith toward God,
See All.... It refers to the Bible teaching concerning the person and work of Jesus Christ. We must know who Christ is and believe in that Christ.

1. THE IMPORTANCE OF THE DOCTRINE OF CHRIST
1. Necessary for Salvation (2 John 1:9Whosoever transgresseth, and abideth not in the doctrine of Christ, hath not God. He that abideth in the doctrine of Christ, he hath both the Father and the Son.
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2. Pathway to the Father (2 John 1:9Whosoever transgresseth, and abideth not in the doctrine of Christ, hath not God. He that abideth in the doctrine of Christ, he hath both the Father and the Son.
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3. Cause for the Breaking of Fellowship (2 John 1:10-11 [10] If there come any unto you, and bring not this doctrine, receive him not into your house, neither bid him God speed: [11] For he that biddeth him God speed is partaker of his evil deeds.
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4. Foundation for All Other Doctrine (Hebrews 6:1Therefore leaving the principles of the doctrine of Christ, let us go on unto perfection; not laying again the foundation of repentance from dead works, and of faith toward God,
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2. THE PERVERSION OF THE DOCTRINE OF CHRIST
1. A Perversion of the Gospel of Christ (Galatians 1:6-9 [6] I marvel that ye are so soon removed from him that called you into the grace of Christ unto another gospel: [7] Which is not another; but there be some that trouble you, and would pervert the gospel of Christ. [8] But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed. [9] As we said before, so say I now again, if any man preach any other gospel unto you than that ye have received, let him be accursed.
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2. The Preaching of Another Jesus (2 Corinthians 11:3-4 [3] But I fear, lest by any means, as the serpent beguiled Eve through his subtilty, so your minds should be corrupted from the simplicity that is in Christ. [4] For if he that cometh preacheth another Jesus, whom we have not preached, or if ye receive another spirit, which ye have not received, or another gospel, which ye have not accepted, ye might well bear with him.
   See All...); Kris Kringle literally means the Christ-child . This makes Santa into another Jesus.
3. THE NECESSITY OF THE HUMANITY OF CHRIST
1. Those Who Deny He Came in the Flesh (2 John 1:7For many deceivers are entered into the world, who confess not that Jesus Christ is come in the flesh. This is a deceiver and an antichrist.
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2. The Importance of Christ Coming in the Flesh (John 1:14And the Word was made flesh, and dwelt among us, (and we beheld his glory, the glory as of the only begotten of the Father,) full of grace and truth.
   See All...; Hebrews 2:17-18 [17] Wherefore in all things it behoved him to be made like unto his brethren, that he might be a merciful and faithful high priest in things pertaining to God, to make reconciliation for the sins of the people. [18] For in that he himself hath suffered being tempted, he is able to succour them that are tempted.
   See All...; Hebrews 4:15-16 [15] For we have not an high priest which cannot be touched with the feeling of our infirmities; but was in all points tempted like as we are, yet without sin. [16] Let us therefore come boldly unto the throne of grace, that we may obtain mercy, and find grace to help in time of need.
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4. THE NECESSITY OF THE DEITY OF CHRIST
1. Those Who Deny His Deity (1 John 5:1Whosoever believeth that Jesus is the Christ is born of God: and every one that loveth him that begat loveth him also that is begotten of him.
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2. The Importance of Christ Being God (John 1:1In the beginning was the Word, and the Word was with God, and the Word was God.
   See All...; 1 Timothy 3:16And without controversy great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory.
   See All...; Colossians 1:19For it pleased the Father that in him should all fulness dwell;
   See All...; Colossians 2:8-10 [8] Beware lest any man spoil you through philosophy and vain deceit, after the tradition of men, after the rudiments of the world, and not after Christ. [9] For in him dwelleth all the fulness of the Godhead bodily. [10] And ye are complete in him, which is the head of all principality and power:
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Conclusion: This world seeks to give us another Jesus—one who is either not quite human or is not quite God. However, all our hope of eternity and strength for service in this life is based on the Christ of the Bible. Trust in Him as your Saviour. Live in His faith for your strength. Thank the Lord for His unspeakable gift!