Titus 1:15-16

v15: For unbelievers, “nothing is pure” because “they abuse and turn to sin things that are lawful and good.”  They can “suck poison out of what [we] draw sweetness from.” If the mind and conscience of someone is defiled, “a taint [will be] passed on to all they do.”

v16: There are many who by their words “profess to know God,” but by their lives and conduct reject Him. Let us not be those whose practice contradicts our profession of faith.