Everyone who is already baptized needs to look back and consider the meaning of baptism. Even if you were baptized ten or twenty years ago, you still need to review this matter. We should always remember the verse which says, "Or are you ignorant that all of us who have been baptized into Christ Jesus have been baptized into His death?" (Rom. 6:3). This verse is spoken in retrospect, not as a forethought.
The verses in Mark 16, Acts 2, Acts 22, and 1 Peter 3 are for those who have not yet been baptized, whereas the verses in Romans 6 and Colossians 2 are for those who have been baptized. They address those who have been baptized already. God is telling them, "Do you not know that when you were baptized, you died together with Christ and were buried and resurrected together with Him?"
Romans 6 emphasizes death and burial even though it also speaks of resurrection. Colossians 2 is more advanced; it emphasizes burial and resurrection, with resurrection as the focus. The emphasis of Romans 6 is death: "Or are you ignorant that all of us who have been baptized into Christ Jesus have been baptized into His death?" The main point here is death. We should die together with Christ. Romans 6 is on death and burial, whereas Colossians 2 is on burial and resurrection.
The water of baptism typifies the tomb. Today, when we put a person into the water, it is as if we are burying him in the ground. When we raise him up from the water, it is equivalent to raising him up from the tomb. Before one can be buried, he must first be dead. You cannot bury a living person. If a person rises up again after he is buried, this is surely resurrection. The first part of this truth is found in Romans, and the second part of this truth is found in Colossians.
When the Lord Jesus was crucified, He carried us along with Him to the cross; we were crucified there as well. In the eyes of God, He has terminated us. What do you think of yourself? You may say, "I am a terrible person to deal with!" Those who do not know themselves do not realize how impossible they are. A person who knows God and who knows himself will say, "I am an impossible person."
When we were heavy-laden with sin, we heard of the death of the Lord Jesus. This is the gospel. Then we saw that we were beyond all hope and that we were dead. This is also the gospel. Thank God, this is the gospel! The Lord’s death has included all of us. We are dead in Christ. This is a great gospel! Just as the Lord’s death is a great gospel, our own death is also a great gospel. Just as the Lord’s death is a joyful matter, our own death is also a joyful matter. What should be the first thought that comes to our mind when we hear that our Lord has died? We should be like Joseph of Arimathea; we should bury Him. Similarly, when we hear that we are dead, the first thing that we should do is to bury ourselves, because burial is the first thing that follows death. Death is not the end. We are already dead in Christ; therefore, the first thing we need to do is bury ourselves.
(New Believers Series: Baptism #1, Chapter 1, by Watchman Nee)