Verses with the word excellency in the New Testament (3 verses):

1 Corinthians 2:1
And I, brethren, when I came to you, came not with excellency of speech or of wisdom, declaring unto you the testimony of God.

2 Corinthians 4:7
But we have this treasure in earthen vessels, that the excellency of the power may be of God, and not of us.

Philippians 3:8
Yea doubtless, and I count all things but loss for the excellency of the knowledge of Christ Jesus my Lord: for whom I have suffered the loss of all things, and do count them but dung, that I may win Christ,