Yes, and no.
Consider that the devil comes to YOU as an "angel of light" and HIS MINISTERS, as "ministers of Righteousness".
They will FAKE Fruit. They will sound like "christians".
So, this is why you can't just look at a lifestyle or a speech style and recognize a Christian.
You have to listen to how they define one thing.......Its this.. What do they TEACH "keeps them saved".
Not what saved them, but what KEEPS them Saved.
As the fakirs and the legalists will never ever agree that Jesus and the Blood of Jesus "keeps them saved".
They will all state some type of agreement regarding "jesus saves" and they will slightly talk about the Cross,
and then in comes the commandment keeping and the enduring to the end, and the abiding", and all their SELF EFFORT
to STAY SAVED.
So, notice this, and you have found your faker, or your "fallen from Grace", Legalist, who may be saved, or not.
Once that list comes out......That LIST of things to do and not do, to STAY SAVED, then you have found the legalist or in some cases the unsaved religious fakir.