Galatians 5:19-21 (New International Reader's Version)
19 What the sinful nature does is clear. It enjoys sexual sins, impure acts and wild living. 20 It worships statues of gods. It also worships evil powers. It is full of hatred and fighting. It is full of jealousy and fits of anger. It is interested only in getting ahead. It stirs up trouble. It separates people into their own little groups. 21 It wants what others have. It gets drunk and takes part in wild parties. It does many things of that kind. I warn you now as I did before. People who live like that will not receive God's kingdom.
We have long heard the adage that one bad apple can spoil the whole bushel. The thing about our lives and our characters is that we all produce "fruit". What I mean is this, our daily acts, the things we do, reflect what is at the root of our existence, and as we go about our lives we will show what we are made of. If we grow in the things of the world, the fruit we produce will be reflective of that worldly life-style. To the world, these fruits are seemingly okay; besides, "why not do whatever you want to do as long as your not hurting anybody", but to God these are in direct opposition to Him. Living in this way shows that you would rather turn your back on Him.
Reading this list of the "sinful nature" gives us a good picture of how to live a life in total opposition to being a Christian, but even for Christians, the bad fruit can sometimes be found in the bushel basket of our lives. It is hard to always produce good fruit, but if we fully and completely surrender our lives to Jesus Christ, it will be much easier. Our aim should be to sink our roots deep into the Word of God, and allow ourselves to be governed by the Holy Spirit. If we do so, we will produce good fruit.
Photo "Adam's Apple; temptation was great" by Dimitri C from stock.xchng