We have seen it stressed several times in John's first epistle. Now we are seeing it stressed again. It is the importance of walking in the same way that Jesus walked. It is very important that we, as Christians, are truly living for Jesus.
John the apostle makes it clear here that we should walk as He walked if we stay in Christ. This means more than obeying the Ten Commandments. It means more than going to church. We are to love God with all of our hearts. This means that we cannot just give an outward show of godliness. We must stop going through the motions.
How do we know how to walk like Jesus walked? We study His life. We have four authentic accounts of the life of Jesus in the Gospels. What Jesus taught and what Jesus did are still relevant to us today, and allow us an opportunity to understand what to do when faced with any situation in life. The teachings of Jesus are still relevant today. We should study them. We should obey them. We should walk in the same way that He walked.