"Keep your religion to yourself!"
"Never discuss religion or politics..."
"Religion is a personal thing."
As believers we MUST speak up for Y'shua. We MUST preach for people to repent and be saved.
Y'shua preached "Repent! For the kingdom of heaven is at hand." {Matthew 4:17 KJV} We too are told "...Go ye into all the world, and preach the gospel to every creature. He that believeth and is baptized shall be saved; but he that believeth not shall be damned." {Mark 16:15,16 KJV}
"...he that believeth not the Son shall not see life; but the wrath of God abideth on him." {John 3:36 KJV}
If we don't preach, others can not be saved from the damnation Christ warns about, and WE will be held guilty for withholding the truth. {Ezekiel 33:8}
The Scriptures warn of who will not be entering the kingdom...
Fornicators (unmarried sex), idolaters (having anything more important than God), adulterers, effeminate (men that wear women's clothing, act feminine), abusers of themselves with mankind (homosexuals), thieves, covetous, drunkards, revilers (talk abusively about someone), extortioners, fearful (faithless), unbelieving, abominable (Scripture mentions many items and activities that God finds abominable), murders (abortion is murder), whore mongers (female prostitute), sorcerers (drug users), liars, dogs (male prostitute). {1 Corinthians 6:9,10; Revelation 21:8; 22:15}
Christians have a responsibility to preach, just as Christ did "Repent, believe and be baptized." {Matthew 4:17, Mark 16:15,16} It will not make us popular {please see Matthew 10:22}nor "politically correct" and it definitely will not be easy, but it is our commission.
We will be held responsible for their continued guilt if we do not share the kingdom message with them. {Ezekiel 33:8}