John 13:36-38

Simon Peter asked him, "Lord, where are you going?" Jesus replied, "Where I am going, you cannot follow now, but you will follow later." Peter asked, "Lord, why can't I follow you now? I will lay down my life for you." Then Jesus answered, "Will you really lay down your life for me? Very truly I tell you, before the rooster crows, you will disown me three times!" 

Lord, where are you going? 
John 16:4b-6  "I did not tell you this from the beginning because I was with you, but now I am going to him who sent me. None of you asks me, 'Where are you going?' Rather, you are filled with grief because I have said these things."
John 14:5  Thomas said to him, "Lord, we don't know where you are going, so how can we know the way?"

Where I am going you cannot follow now 
John 13:33  "My children, I will be with you only a little longer. You will look for me, and just as I told the Jews, so I tell you now: Where I am going you cannot come."
John 14:2  "My Father's house has many rooms; if that were not so, would I have told you that I am going there to prepare a place for you?"

but you will follow later 
John 21:18-19  "Very truly I tell you, when you were younger you dressed yourself and went where you wanted; but when you are old you will stretch out your hands, and some one else will dress you and lead you where you do not want to go." Jesus said this to indicate the kind of death by which Peter would glorify God. Then he said to him, "Follow me!"
2 Peter 1:13-14  I think it is right to refresh your memory as long as I live in the tent of this body, because I know that I will soon put it aside, as our Lord Jesus Christ has made clear to me.

before the rooster crows, you will disown me three times 
John 18:26-27  One of the high priest's servants, a relative of the man whose ear Peter had cut off, challenged him, "Didn't I see you with him in the garden?" Again Peter denied it, and at that moment a rooster began to crow.

Scriptures taken from the Holy Bible, New International Version® NIV®, 
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