God’s Words in Romans 6:3-5 says: Or do you not know that as many as were baptized into Christ Jesus were baptized into his death? Therefore we have been buried with him through baptism into death, in order that just as Christ was raised from the dead through the glory of the Father, so we too may live a new life. For if we have become united with him in the likeness of his death, we will certainly also be united in the likeness of his resurrection.
The death of Jesus was the point of no return, where Lord Jesus stopped being human, that was formerly in all respects be equated to us. Before Lord Jesus died and was raised -with the same state as human-, Jesus still had possibility to sin. Sin here means having chance to take action that was not exactly correct as the Father’s will. In this case we have to know that the target to be achieved by Lord Jesus was to do the will of the Father, not only to carry out the law or God’s commands.
When Lord Jesus was baptized by John the Baptist, it showed that our Lord Jesus had possessed a level of obeying the rules of religion. Such level cannot be achieved by man. God’s Word says that no one is justified by doing the law of Torah, because indeed no man is able to fulfill the law of Torah perfectly. Baptism that was received by Lord Jesus from John the Baptist showed that He identified Himself equal to those who were willing to quit from their unlawful conduct, whereas Lord Jesus was sinless.
Although in accordance with the law of religion that Lord Jesus was righteous, yet unexamined whether He could not miss at all (hamartia, sin). By His death on the cross, it showed perfect obedience. Reaching this level Lord Jesus learned to obey from what He suffered.1 Lord Jesus not only carried out the law, but also in all things did the will of the Father and had finished His work. Since the death along with His resurrection, Lord Jesus no longer had the slightest chance to sin (being missed). This was said in the Words of God that His death was His passing away towards sin (Romans 6:10, for the death He died, He died to sin once for all, but the life He lives, He lives to God). After His death along with His resurrection, He sits down again at the right hand of the Father to rule the reign. The Lord Jesus rules this universe in order to serve the Father. That is why it is said that He becomes the Lord to the glory of God the Father.2
Thus being united in the death of the Lord, it means we must strive to reach such level that had been achieved by our Lord Jesus, in obedience even till death. The more years towards the end of our lives, we should do more accurately the will of the Father and finish the works the Father entrusts us. By filling life like this, one day we will also be resurrected together with Lord Jesus and live for the glory of the Father in the Kingdom of Heaven. That is why the Word of God declares that we will receive the promises of God the Father whom we receive it together with the Lord Jesus. That promise is about being glorified together with the Lord Jesus in the Father’s Kingdom in Heaven and co-heirs together with Lord Jesus. Only those who experience death in God – which means death to sin- will be resurrected together with the Lord. It is to be raised together with our Lord Jesus to serve the Father in heaven.
1) Hebrew 5:8; 2) Philippians 2:11