Are you anti-Semitic? Because when Paul wrote the verse that you cite in Titus, it was written about Jews. Taking single versus out-of-context a person can easily distort what the Bible says. Here is Titus 1:16 in context...Yes. The Bible informs us of this, too.
Titus 1:16; Matthew 7:20
There are also many rebellious people, idle talkers and deceivers, especially those of the circumcision; they must be silenced, since they are upsetting whole families by teaching for sordid gain what it is not right to teach. It was one of them, their very own prophet, who said,
“Cretans are always liars, vicious brutes, lazy gluttons.”
That testimony is true. For this reason rebuke them sharply, so that they may become sound in the faith, not paying attention to Jewish myths or to commandments of those who reject the truth. To the pure all things are pure, but to the corrupt and unbelieving nothing is pure; their very minds and consciences are corrupted. They [the Jews that Paul refers to] profess to know God, but they deny him by their actions; they are detestable, disobedient, unfit for any good work.
The same principle applies to Matthew's gospel...
Matthew 7:15-20, “Beware of false prophets, who come to you in sheep’s clothing but inwardly are ravenous wolves. You will know them by their fruits. Are grapes gathered from thorns or figs from thistles? In the same way, every good tree bears good fruit, but the bad tree bears bad fruit. A good tree cannot bear bad fruit, nor can a bad tree bear good fruit. Every tree that does not bear good fruit will be cut down and thrown into the fire. Thus you will know them [false prophets] by their fruits."
You want to take something out of context? Try this... Psalm 14 says "there is NO GOD" So, by your methodology, God doesn't exist!
It is a serious mistake to quote the Bible out of context to prove a predetermined point!