Its a little late but I thought it would be a good idea to spend some time dwelling upon today's sermon I heard from our church pastor. The core of the message was that sometimes what works for others in the past might not work for us now or in the future. For example, consider what Abraham did when he took his son Issac to sacrifice Him. Abraham got up early in the morning and took the firewood and fire from his own home for the sacrifice. But, when the sons of Aaron did the same thing in Leviticus 10 : 1, it brought about their own death.
Aaron's sons Nadab and Abihu took their censers, put fire in them and added incense; and they offered unauthorized fire before the LORD, contrary to his command.
In the same way we can see that sometimes what was right in the past in our own lives might not always be the best thing to do. For example, Moses was commanded to hit a rock to bring forth water and He did so, but the second time He was only told to command to the rock. Moses did not give much attention and He just did the same thing he had done the last time he encountered such a situation. God looked at this as disobedience and punished Moses. This was one of the reasons why Moses never entered Canaan - The promised land.
In our lives, we might have certain misconceptions about how God works which lead to our disobedience against God rather than obedience. This is a very important aspect of Christian life and we should never give more importance to our past experiences than the actual command of God.