18: And it came to pass, as he was alone praying, his disciples were with him: and he asked them, saying, Whom say the people that I am? 19: They answering said, John the Baptist; but some say, Elias; and others say, that one of the old prophets is risen again. 20: He said unto them, But whom say ye that I am? Peter answering said, The Christ of God. 21: And he straitly charged them, and commanded them to tell no man that thing; 22: Saying, The Son of man must suffer many things, and be rejected of the elders and chief priests and scribes, and be slain, and be raised the third day. 23: And he said to them all, If any man will come after me, let him deny himself, and take up his cross daily, and follow me. 24: For whosoever will save his life shall lose it: but whosoever will lose his life for my sake, the same shall save it. 25: For what is a man advantaged, if he gain the whole world, and lose himself, or be cast away? 26: For whosoever shall be ashamed of me and of my words, of him shall the Son of man be ashamed, when he shall come in his own glory, and in his Father's, and of the holy angels. 27: But I tell you of a truth, there be some standing here, which shall not taste of death, till they see the kingdom of God.

The people who have heard the message are not sure who the message is from. They don’t really know Jesus

20: He said unto them, But whom say ye that I am? Peter answering said, The Christ of God.

In contrast to the people in general, the Church knows the message is inspired by the Anointed One (Christ = Anointed). The Church knows Jesus.

21: And he straitly charged them, and commanded them to tell no man that thing;

The Church is not able to tell anyone who Jesus is. Each person must get to know Him personally.

22: Saying, The Son of man must suffer many things, and be rejected of the elders and chief priests and scribes, and be slain, and be raised the third day. 23: And he said to them all, If any man will come after me, let him deny himself, and take up his cross daily, and follow me.

Getting to know Jesus sometimes involves rejection by the leaders of the Church, and even having to face death. It also involves a daily struggle of denying self in order to follow Him.

24: For whosoever will save his life shall lose it: but whosoever will lose his life for my sake, the same shall save it.

The life of whoever knows Jesus will be different from someone who does not know Him. The one knowing Jesus will live their life for Him. The one who does not know Jesus will live their life for themselves.

25: For what is a man advantaged, if he gain the whole world, and lose himself, or be cast away?

Cast - # 2210 – suffer loss. The person who does not know Jesus will spend their life trying to gain the things of the world and then will lose everything including eternal life!

26: For whosoever shall be ashamed of me and of my words, of him shall the Son of man be ashamed, when he shall come in his own glory, and in his Father's, and of the holy angels.

Whoever is ashamed of Jesus or the Bible will find out that Jesus is ashamed of them when He comes the second time in glory! They will have lost eternal life.

27: But I tell you of a truth, there be some standing here, which shall not taste of death, till they see the kingdom of God.

There will be some people in the Church who will be alive when Jesus comes the second time. They will taste death at that time, because they will be slain by the glory or brightness of His Coming (2 Thess 2:8; 2 Thess 1:7-10)