Mat 16:15 He saith unto them, But whom say ye that I am? 16 And Simon Peter answered and said, Thou art the Christ, the Son of the living God. 17 And Jesus answered and said unto him, Blessed art thou, Simon Barjona: for flesh and blood hath not revealed it unto thee, but my Father which is in heaven. 18 And I say also unto thee, That thou art Peter, and upon this rock I will build my church; and the gates of hell shall not prevail against it. 19 And I will give unto thee the keys of the kingdom of heaven: and whatsoever thou shalt bind on earth shall be bound in heaven: and whatsoever thou shalt loose on earth shall be loosed in heaven. 20 Then charged he his disciples that they should tell no man that he was Jesus the Christ. 21 From that time forth began Jesus to shew unto his disciples, how that he must go unto Jerusalem, and suffer many things of the elders and chief priests and scribes, and be killed, and be raised again the third day. 22 Then Peter took him, and began to rebuke him, saying, Be it far from thee, Lord: this shall not be unto thee. 23 But he turned, and said unto Peter, Get thee behind me, Satan: thou art an offence unto me: for thou savourest not the things that be of God, but those that be of men.
In the first instance, Jesus commends Peter for his astute, spiritual understanding, in the very next occasion; Peter is rebuked for not being able to savor the things of God.
Jesus praises him as a rock in verses 17 and 18 and derides him as a devil in verse 23.
Talk about going from hero to zero in no time at all!
And such is our case, depending on our being filled with the Spirit or operating in the power of the flesh.
In the Spirit, we are capable of superhuman understanding and action. In the flesh we are capable of abject stupidity and extreme wickedness.
Guess how I know!!!