John 5:44
How can you believe [in me] when you [offer and] accept honors from one another, but do not try to obtain the honor that comes from the only God?
2 Corinthians 12:1
Although I must boast about myself [See 11:21-27], it [really] is not profitable. So, I will go on to [tell about] visions and [inspired] revelations given [to me] from the Lord.
2 Corinthians 12:11
I have become foolish [i.e., by my boasting], but you made me do it [i.e., in order to vindicate myself]. For I should have been commended by you [i.e., for my effective ministry there in Corinth], because I was not inferior in any way to those "super apostles" [See 11:5], even though I am nothing.
Philippians 2:3
Do not do anything from rivalry or from empty conceit, but in humility, consider others better than yourselves.