The Dog of Obstinate Sinners
Source: TTT
Matthew 7:6
Do not give dogs what is holy; do not throw your pearls before swine. If you do, they may trample them under their feet, and then turn and tear you to pieces.
Revelation 22:15
But outside are the dogs, the sorcerers, the sexually immoral, the murderers, the idolaters, and everyone who loves and practices falsehood.