All of these are matters of conscience, but we can use the principles in God's Word to reason through them.
The first question has to do with modesty, IMO. The Scriptures tell us to be modest and humble and put others ahead of ourselves, giving no reason for offense. If a hairstyle in your region of the world is generally considered rebellious then it would not be acceptable. Being an art student, I used to dress in a very eccentric way. I thought that as long as it wasn't too s@xually enticing, too much flesh, etc. that it was fine, but we had a discussion about modesty in our Bible study group and came to the conclusion that drawing attention to yourself is by definition immodest, so I was in the wrong when I dressed in that manner.
Question number 2 is a question of balance. Christians are to seek the kingdom first and have appropriate priorities so we need to watch that computer gaming (or message boardsÃ‚Â pointing at myself) don't take up so much time that your other Christian responsibilities are not being fulfilled (such as fulfilling the spiritual, physical and emotional needs of yourself and your family and also showing love of neighbor and building up the congregation). We also see that God hates violence and immorality, so we want to be sure that we are imitating Him and hating those things as well.Ã‚Â
Third question: Many people have different views on this matter. I know that God is reasonable and we have made our personal decision in this matter for our family. I found a good article on the subject on Jehovah's Witnesses website. http://www.watchtowe.../article_01.htm It is called Is Contraception Morally Wrong.
Here is a good quote from that:Ã‚Â Ã‚Â Ã‚Â
* Is there anything sinful about S@xual relations between husband and wife?Ã¢â‚¬â€Proverbs 5:15, 18, 19.
* What should Christians bear in mind if they use contraceptives?Ã¢â‚¬â€Exodus 21:22, 23.
* How should others view married couples who use contraceptives?Ã¢â‚¬â€Romans 14:4, 10-13.
I think this is a well rounded and knowledgable answer. However, we are also commanded not to judge each other over "doubtful disputations." SO if we see a Christian with long hair, who plays video games, or uses contraception--we should distinguish whether we are judging, or whether we have a legitimate concern about a fellow believer.
No.1 I think the attitude of the heart is revealed by appearance, (e.g. long hair, saggy pants, revealing attire) but may be because the Christian is...
a. ignorant of God's word
b. not being watchful, or
c. a young Christian and the Lord is pinpointing other areas of his or her character.
No. 2 I believe it depends on the amount of evil in the games. If a "Christian" does not have enough spiritual discernment to see that watching murder, rape, lustful or lewd scenes, or continual foul language is wrong--I would say the person is in need of prayer. Playing sports or other "borderline" things, such as bloodless war or weapons may not bring you closer to God, but I don't knowif one would call it sin--unless it is taking too much of your time--a matter of conscience.
No. 3 Between a couple and God.