"Matthew 28:20 Teaching them to observe (do) all things whatsoever I (Jesus Christ) have commanded you: and, lo, I am with you alway, even unto the end of the world. Amen. 2 Corinthians 7:1 ... dearly beloved, let us cleanse ourselves from all filthiness of the flesh and spirit, perfecting holiness in the fear of God."
I am a retired pastor of
the Church of God (Tennessee).
My name is Isaac Livingston. I am from Neyyoor India.
The declaration is: Apostles taught the doctrine of Jesus Christ. It is of God. All other doctrines are from men and devils. Explanation: Church attending Christians are interested in the word of God, also in ceremonies, traditions, rituals, etc. Most of them listen to sermons of preachers and think that it is the word of God. But what they do not know is that the preachers do not know the word of God and what they study is books of famous Christian authors, of course a few verses of scriptures are in them. These authors make doctrines from the traditions, but not from the word of God, and preachers spread these doctrines in churches, and Christians got infected by these doctrines. In Mark 7, Jesus Christ says, "9 .. Full well ye reject the commandment of God, that ye may keep your own tradition. ... 13 Making the word of God of none effect through your tradition, which ye have delivered: and many such like things do ye." But Jesus Christ taught the doctrine of God, and people of his time admired his doctrine. "Matthew 7:28 And it came to pass, when Jesus had ended these sayings, the people were astonished at his doctrine:" Let us see a few of his doctrines from the same chapter, so that we may have a feel of it.
The purpose of the doctrine of Jesus Christ is to save the people from hell, and convert them to inherit heaven. Jesus Christ and his apostles preached the message as doctrine, commands, or as gospel. What is the Gospel? The gospel is the good news that tells us how we can inherit eternal life. Jesus Christ preached the Gospel when he was alive as a man and what he has preached is recorded in the Bible. Matthew 4:23 says: "And Jesus went about all Galilee, teaching in their synagogues, and preaching the gospel of the kingdom, ..." Mark 1 says: "14) Now after that John was put in prison, Jesus came into Galilee, preaching the gospel of the kingdom of God, 15) And saying, The time is fulfilled, and the kingdom of God is at hand: repent ye, and believe the gospel." Jesus Christ sent his disciples to preach his gospel even before he was crucified. Luke 9:6 says: "... they departed, and went through the towns, preaching the gospel, and healing everywhere." So, Jesus Christ has preached the gospel, taught his disciples to preach the gospel and send them also to preach the same gospel that he has preached. Jesus Christ repeatedly says that we must obey his commandments to inherit eternal life. "Revelation 22:14 Blessed are they that do his commandments, that they may have right to the tree of life, and may enter in through the gates into the city." Again he says that the inheritance is according to, or in proportion to, our works, or what we have done. "Revelation 22:12 And, behold, I come quickly; and my reward is with me, to give every man according as his work shall be." So, the inheritance of people will be different, in proportion to their work. Jesus Christ preached them as commandments also and told his apostles to teach the same. Matthew 28 says, "18 And Jesus came and spake unto them, saying, All power is given unto me in heaven and in earth. 19 Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: 20 Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you alway, even unto the end of the world. Amen." Jesus preached his doctrine.
Let me give a few links, if you like to read more details. "Doctrine", "Commands", "Gospel." Thank you.
God Bless You