I went to double check, and it is there clearly in chapter 7. (it is a long read to get there, but important to someone seeking Christ. it was and is an important instruction for many leading to maturity in Christ in line with Scripture ).
Also, it may help to remember that to the Christian there is no absolute right or wrong. It may be all right for one person to do a thing, but not all right for another person to do the same thing. What is right or wrong for a Christian depends upon the level of life he has attained; the level of life is reflected in how many things he cannot do. Some things that God permits a baby new born Christian to do (like bar-tending even, as one man did without qualms for 2 years after being saved, then set it down and walked away saying "I can't do this any more". ) a mature Christian would no longer even consider.
There have been many testimonies that would fill(and do fill) many books and there is not enough time or space in a hundred threads to begin to list them all, of the believers lives who were called by God and learned His ways and taught others what is true, all in line with His Word and His Life.
Corrie Ten Boom, for example, is well known for her testimony and life of faith and love. (several here have mentioned her, I think). She clearly and simply warned the churches in america about several things, including gambling and learning to live in a police state(being ready for what happened in Germany; as it has likewise developed in the untied states), and few listened.
The sad fact is that many congregations never get past the milk, and continue living lives in sinful behavior because they have no one to lead them, like sheep without a shepherd; and others 'listen' gladly, but soon return to the ways of the world.
. Jesus instructs all those who seek Him, who have sought the Father and continue seeking Him to Live His Live, consecrated and set apart and holy, always always always fully in line with His Word.
And as it is written :
1 John 3
New King James Version (NKJV)
3 Behold what manner of love the Father has bestowed on us, that we should be called children of God! Therefore the world does not know us, because it did not know Him. 2 Beloved, now we are children of God; and it has not yet been revealed what we shall be, but we know that when He is revealed, we shall be like Him, for we shall see Him as He is. 3 And everyone who has this hope in Him purifies himself, just as He is pure.
The longer one walks with Jesus, the purer his life gets; or else he gets more wicked.
Revelation 22:11-12
Complete Jewish Bible (CJB)
11 “Whoever keeps acting wickedly, let him go on acting wickedly;
whoever is filthy, let him go on being made filthy.
“Also, whoever is righteous, let him go on doing what is righteous;
and whoever is holy, let him go on being made holy.”
12 “Pay attention!” [says Yeshua,] “I am coming soon, and my rewards are with me to give to each person according to what he has done.
There's no in-between.