carnal Christian - someone that goes to church but doesn´t obey the Bible teachings. A person who received Christ as their Savior but returned to living a worldly life where they put Jesus on the back burner and continue to live a sinful life where they satisfy the lusts of their heart.

Example: A person who goes to Church every week and gives a tithe but lives like Hell(smokes or drinks or watches ungodly TV or practices adultery or gossips or doesn't share the gospel about how to become Born Again to the lost) for the rest of the week. People who practice these things are usually are very gluttonous, grudge, vain, shallow, and selfish. They follow their emotions instead of God. And by saying this, they come under false screen names on this forum to show their carnal ways

Which of JC teachings should Christian follow? Aside from giving up those "vices" you listed, what teachings of JC should they follow (and what should they ignore)?

And by saying this, they come under false screen names on this forum to show their carnal ways

This is the truth i also observe. The screen names are just facades; conversations not portraying the names they claim.

I'm not surprised anyway because this is the end-time.

@Cayon
Just in case you're interested since you said you were reading the Qu'ran you're invited to a thread https://www.nairaland.com/nigeria/topic-144474.0.html where you listen to the Ko'ran in English, I pray that that convince and convert your faith.