1 John 2:4-6

He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him. But whoso keepeth his word, in him verily is the love of God perfected: hereby know we that we are in him.  He that saith he abideth in him ought himself also to walk, even as he walked.  

The Bible clearly gives us the keys to knowledge and understanding of how we are to walk as Christians.  We first must learn the word of God.  What does His word instruct us on how to live this life?  After we learn how Jesus walked on this earth, we copy what Jesus did while He was here.  Having the “love of God perfected” in us as we follow the word.