"If we say that we have fellowship with Him and yet walk in the darkness, we lie and do not practice the truth;" 1 John 1:6
Let's face it. Not everyone who claims to be a Christian behaves like one should. If the estimated 247 million Christians in the US alone truly reflected the teachings of Jesus in word, thought and deed, Christianity would not be experiencing the decline that has been documented. Our children would not be leaving the church as they enter adulthood at the levels they are. And our country would not be in the state of moral degradation that it clearly is. But this is not about what others are or are not doing. This is about self examination.
Beloved, the questions about why things are as they are must begin with a long look in the mirror of Scripture. We as individuals must make an honest determination about how much the word and will of God exists in our lives. It is the easiest thing in the world to do to cast stones at others or point out the "motes of dust" in their eyes, but are we as quick to recognize deficiencies in our own lives? The Scripture says, "For if anyone is a hearer of the word and not a doer, he is like a man who looks at his natural face in a mirror; for once he has looked at himself and gone away, he has immediately forgotten what kind of person he was. But one who looks intently at the perfect law, the law of liberty, and abides by it, not having become a forgetful hearer but an effectual doer, this man will be blessed in what he does," James 1:23-25.
It is beyond both our ability and our commission to "fix" the whole world. That is strictly within the purview of God. We can, however, do all within our ability to be in alignment with His will as reveled in His word in our own lives. It would be amazing how "fixed" the world would become if everyone focused on ensuring the orderliness of their own houses.