from "Don't Waste Your Life" by john piper

"... it is my eager expectation and hope that I will not be at all ashamed, but that with full courage now as always Christ will be honored in my body, whether by life or by death. For to me to live is Christ, and to die is gain." (Phil.1:20,21)

Notice verse 20: "It is my eager expectation and hope that I will not be at all ashamed." Stop here just a moment. Shame is that horrible feeling of guilt or failure when you don't measure up before people whose approval you want very much. It's what the little child feels in the Christmas program when he forgets his lines, and the tears well up, and the silence seems eternal, and the other kids snicker brutally. I remember these horrible times...
What then is the opposite of shame? It's when the child remembers the lines and hears the applause... The opposite of being shamed is being honored. Yes, usually. But Paul was a very unusual person. And Christians ought to be very unusual people. For Paul, the opposite of being shamed was not his being honored, but Christ's being honored through him. "It is my eager expectation and hope that I will not be at all ashamed, but that... Christ will be honored in my body."
What you love determines what you feel shame about. If you love for men to make much of you, you will feel shame when they don't. But if you love for men to make much of Christ, then you will feel shame when He is belittled on your account. And Paul loved Christ more than anything or anyone. "Whatever gain I had, I counted as loss for the sake of Christ. Indeed, I count everything as loss because of the surpassing worth of knowing Christ Jesus my Lord." (Phil.3:7-8).
Whenever something is of tremendous value to you, and you cherish its beauty or power or uniqueness, you want to draw others' attention to it and waken in them the same joy. That is why Paul's all-consuming goal in life was for Christ to be magnified. Christ was of infinite value to Paul, and so Paul longed for others to see and savor this value. That is what it means to magnify Christ - to show the magnitude of His value.