Paul the Apostle (Romans 1:16): For I am not ashamed of the gospel, for it is the power of God for salvation
Luke the Apostle (Luke 9:26): If anyone is ashamed of me and my words, the Son of Man will be ashamed of him when he comes in his glory and in the glory of the Father and of the holy angels.
2004 Interview: Obama Talks about Jesus, Heaven and Sin
“OBAMA: Right. Jesus is a historical figure for me, and he’s also a bridge between God and man, in the Christian faith, and one that I think is powerful precisely because he serves as that means of us reaching something higher. And he’s also a wonderful teacher. I think it’s important for all of us, of whatever faith, to have teachers in the flesh and also teachers in history.”Obama: “There’s the belief, certainly in some quarters, that people haven’t embraced Jesus Christ as their personal savior that they're going to hell.”
GG: You don’t believe that?
OBAMA: I find it hard to believe that my God would consign four-fifths of the world to hell. I can’t imagine that my God would allow some little Hindu kid in India who never interacts with the Christian faith to somehow burn for all eternity. That’s just not part of my religious makeup.
Luke was an Evangelist, not an Apostle.