"But do not think I will accuse you before the Father. Your accuser is Moses, on whom your hopes are set. If you believed Moses, you would believe me, for he wrote about me. But since you do not believe what he wrote, how are you going to believe what I say?" (John 5:45-47)

Why does Jesus say that Moses would accuse them before God? The reason is because Moses was (and is) the central spiritual teacher of the Jewish nation, and Moses delivered to the Jewish nation many instructions and commandments from God. Therefore, Moses was God's representative, and the Jewish priests that Jesus is speaking to here held Moses as the father of their faith.

This is confirmed by the word "hopes" - as in Moses, on whom your hopes are set. The word "hopes" is not that great of a translation, however. The Greek word ἐλπίζω (elpizō) can mean "to hope" but also "hopefully to trust in." Thus a more appropriate translation might be:
"Your accuser is Moses, upon whom you trust."
In other words, because these Jewish priests are supposedly relying upon Moses' teachings, and presented to the people that they represented Moses, they will have to answer to Moses, not Jesus.

We can understand two clear things from this: We can understand that Jesus held to the standard of taking instruction from a particular representative of God and then passing those instructions on. This is the standard that Jesus accepted, rather than a standard of following the teachings of an ecclesiastical organized religion.

This is because coming to know and love God is a personal thing: It is not a group thing. A relationship with God has nothing to do with our standing with a particular organization or congregation: It is between each of us and God (and God's representative).

Furthermore, each of us has to face the responsibilities of our actions. If a person poses as a representative of Moses (as the ecclesiastical Jewish rabbis do) or a representative of Jesus (as the ecclesiastical sectarian priests and ministers do) then they had better truly be representing what they actually taught, or face the consequences of misleading others.

If a person assumes a position of teacher and representative of a representative of God, then they make up their own speculative teachings or interpretations, then they will surely suffer great consequences of misleading others. There is no greater offense to God and His representative than to deceive others in the name of one of God's cherished loving servants, such as Jesus or Moses.

Thus Jesus is clarifying that while the Jewish priests were presenting to others that they had some special connection with Moses, they indeed were not even focused upon what Moses actually taught. If they were, they would have recognized that Jesus was the embodiment of Moses' teachings. Jesus was functionally practicing and teaching what Moses taught.

So what did Moses teach? Consider Deut 6:5:
“Love the Lord your God with all your heart and with all your soul and with all your strength.” (Deut. 6:5)
And what did Jesus teach?
“ ‘Love the Lord your God with all your heart and with all your soul and with all your mind.' This is the first and greatest commandment.” (Matt. 22:37-38)
Jesus says this is the "first and greatest commandment," yet the instruction is identical with the instruction of Moses. Why would Jesus quote Moses and then say this was the first and greatest commandment? Because they were teaching the same thing.

Furthermore, Joshua also confirms the essence of Moses’ teachings:
“But be very careful to keep the commandment and the law that Moses the servant of the LORD gave you: to love the LORD your God, to walk in all His ways, to obey His commands, to hold fast to Him and to serve Him with all your heart and all your soul." (Joshua 22:5)
So we can see that Joshua was also teaching the same thing as Moses taught, and as Jesus taught. So we can see here that Joshua, the student of Moses, is truly representing Moses to the people, because his teachings are consistent with Moses.

“if you believed Moses, you would believe me, for he wrote about me.” 

Is Jesus saying that Moses wrote specifically about Jesus? Because Moses’ focus was to instruct the Israelites about loving, serving and pleasing the Supreme Being, Jesus is the embodiment of those instructions. Jesus is carrying out those instructions. He is loving God. He is serving God. He has given his life to God, just as Moses instructed.

And because Moses instructed his students to work for the pleasure of God, Jesus carried out Moses instructions. Thus Jesus could say that Moses’ teachings were about him. Yet Moses’ teachings were also about Joshua, David, Solomon, Job and so many others who also gave their lives to God and worked to please God. They all embodied Moses' teachings.

We must understand that Jesus is speaking to those who were saying they were representing Moses but were not living by these central instructions of Moses. God was not the center of their lives. They were so caught up in the organizational minutia and rituals of their priestly positions, that their focus was in maintaining their positions of authority. This is why they were questioning Jesus, instead of realizing that Jesus was the pure loving servant of God: Moses' true representative.

So while the Jewish priests were wearing priestly clothes and following rituals discussed in the scriptures, they were not living the central instruction of Moses. They did not get (or teach) the essence of Moses' teachings. This is actually no different than many of today's ecclesiastical sectarian priests, ministers, reverends, popes, cardinals and bishops, who claim they represent Jesus, and practice so many rituals and wear priestly robes, but do not focus on "the first and greatest commandment.”
 
Moses also said:
“And now, O Israel, what does the LORD your God ask of you but to fear [honor and respect] the LORD your God, to walk in all His ways, to love Him, to serve the LORD your God with all your heart and with all your soul, and to observe the LORD's commands and decrees that I am giving you today for your own good?” (Deuteronomy 10:12-13)
This is the essence of Moses' teachings, and what Jesus’ life and teachings were all about. Jesus was perfectly following the instructions of Moses: Jesus was loving and serving God with all his heart and all his soul.


(See also the Gospels of Jesus for the Book of John - translated from the original Greek texts without sectarian influence.)