Here are some examples from Mark 8-10 of the disciples attempting to subvert the ancient, God-centered gospel of truth with the new, man-centered gospel.
Christ reveals his plan:
And he began to teach them that the Son of Man must suffer many things and be rejected by the elders and the chief priests and the scribes and be killed, and after three days rise again. And he said this plainly.
Peter responds:
And Peter took him aside and began to rebuke him. But turning and seeing his disciples, he rebuked Peter and said, “Get behind me, Satan! For you are not setting your mind on the things of God, but on the things of man.”
Christ reveals his plan:
They went on from there and passed through Galilee. And he did not want anyone to know, for he was teaching his disciples, saying to them, “The Son of Man is going to be delivered into the hands of men, and they will kill him. And when he is killed, after three days he will rise.” But they did not understand the saying, and were afraid to ask him.
The disciples respond:
And they came to Capernaum. And when he was in the house he asked them, “What were you discussing on the way?” But they kept silent, for on the way they had argued with one another about who was the greatest. And he sat down and called the twelve. And he said to them, “If anyone would be first, he must be last of all and servant of all.”
Christ reveals his plan:
And they were on the road, going up to Jerusalem, and Jesus was walking ahead of them. And they were amazed, and those who followed were afraid. And taking the twelve again, he began to tell them what was to happen to him, saying, “See, we are going up to Jerusalem, and the Son of Man will be delivered over to the chief priests and the scribes, and they will condemn him to death and deliver him over to the Gentiles. And they will mock him and spit on him, and flog him and kill him. And after three days he will rise.”
James and John respond:
And James and John, the sons of Zebedee, came up to him and said to him, “Teacher, we want you to do for us whatever we ask of you.” And he said to them, “What do you want me to do for you?” And they said to him, “Grant us to sit, one at your right hand and one at your left, in your glory.”
Be aware of man's tendency to substitute the true gospel with our false one.