In Mark chapter 7 the Lord spoke to those who called outward things the truth. He condnmed the outward because it had no effect on the heart. To condemn someone for smoking is the same thing. It does not come from the heart and therefore is a moot point.
Christians always seem to want some outward thing to judge each other for, maybe because it is much easer to keep an outward form then to Do the word of God.
Then came together unto him the Pharisees, and certain of the scribes, which came from Jerusalem.
Mar 7:2 And when they saw some of his disciples eat bread with defiled, that is to say, with unwashen, hands, they found fault.
Mar 7:3 For the Pharisees, and all the Jews, except they wash [their] hands oft, eat not, holding the tradition of the elders.
Mar 7:4 And [when they come] from the market, except they wash, they eat not. And many other things there be, which they have received to hold, [as] the washing of cups, and pots, brasen vessels, and of tables.
Mar 7:5 Then the Pharisees and scribes asked him, Why walk not thy disciples according to the tradition of the elders, but eat bread with unwashen hands?
Mar 7:6 He answered and said unto them, Well hath Esaias prophesied of you hypocrites, as it is written, This people honoureth me with [their] lips, but their heart is far from me.
Mar 7:7 Howbeit in vain do they worship me, teaching [for] doctrines the commandments of men.
Mar 7:8 For laying aside the commandment of God, ye hold the tradition of men, [as] the washing of pots and cups: and many other such like things ye do.
Mar 7:9 And he said unto them, Full well ye reject the commandment of God, that ye may keep your own tradition.
Making the word of God of none effect through your tradition, which ye have delivered: and many such like things do ye.
Mar 7:14 And when he had called all the people [unto him], he said unto them, Hearken unto me every one [of you], and understand:
Mar 7:15 There is nothing from without a man, that entering into him can defile him: but the things which come out of him, those are they that defile the man.
Mar 7:16 If any man have ears to hear, let him hear.
If any man have ears to hear, let him hear.
Mar 7:17 And when he was entered into the house from the people, his disciples asked him concerning the parable.
Mar 7:18 And he saith unto them, Are ye so without understanding also? Do ye not perceive, that whatsoever thing from without entereth into the man, [it] cannot defile him;
Mar 7:19 Because it entereth not into his heart, but into the belly, and goeth out into the draught, purging all meats?
Mar 7:20 And he said, That which cometh out of the man, that defileth the man.
Mar 7:21 For from within, out of the heart of men, proceed evil thoughts, adulteries, fornications, murders,
Mar 7:22 Thefts, covetousness, wickedness, deceit, lasciviousness, an evil eye, blasphemy, pride, foolishness:
Mar 7:23 All these evil things come from within, and defile the man.