Matthew 26:33
Peter answered Him, "[Even] if everyone [else] has doubts about you, I never will."
Luke 22:33
And Peter replied, "Lord, I am ready to go to prison and to death with you."
Mark 14:29
But Peter said to Him, "Although everyone else will have doubts [about you], I never will."
John 13:36-38
Simon Peter said to Jesus, "Lord, where are you going?" Jesus answered, "You cannot follow me where I am going now, but you will [be able to] follow later."
John 21:15
So, after they had eaten, Jesus said to Simon Peter, "Simon, son of John, do you really love me more than these [other disciples do]?" Peter answered Him, "Yes, Lord, you know that I love you." [Note: Since two different Greek words for "love" are used in this conversation, some scholars see a distinction in their meaning. See Butler, Vol. II, pp. 453-457 for a discussion of these views]. Jesus replied to him, "[Then] feed my lambs."
Romans 12:10
In your love for your brothers, show tender affection toward one another. Try to outdo one another in showing respect [for each other].
Philippians 2:3
Do not do anything from rivalry or from empty conceit, but in humility, consider others better than yourselves.
1 Peter 5:5-6
And in the same way, you younger [Christians] should be [respectfully] submissive to the older ones. And all of you should [be willing to] humbly serve one another, for God stands opposed to [the efforts of] proud people, but extends His unearned favor to those [who serve] with humility.