Romans 1:16 (NIV)
For I am not ashamed of the Gospel, because it is the power of God that brings salvation to everyone who believes: first to the Jew, then to the Gentile.

1 Corinthians 1:23-24 (NIV)
but we preach Christ crucified: a stumbling block to Jews and foolishness to Gentiles, but to those whom God has called, both Jews and Greeks, Christ the power of God and the wisdom of God.

Luke 9:26 (NIV)
Whoever is ashamed of Me and My words, the Son of Man will be ashamed of them when He comes in His glory and in the glory of the Father and of the holy angels.