Isaiah 59:13
transgressing, and denying the LORD, and turning back from following our God, speaking oppression and revolt, conceiving and uttering from the heart lying words.

Mark 8:38
For whoever is ashamed of me and of my words in this adulterous and sinful generation, of him will the Son of Man also be ashamed when he comes in the glory of his Father with the holy angels."

Luke 9:26
For whoever is ashamed of me and of my words, of him will the Son of Man be ashamed when he comes in his glory and the glory of the Father and of the holy angels.

Luke 12:9
but the one who denies me before men will be denied before the angels of God.

2 Timothy 2:12
if we endure, we will also reign with him; if we deny him, he also will deny us;