And what you believe doesn't make it true too.
Was God's purpose to fulfill all the promises of God always with the Israelites in your opinion?
Sorry, but I wasn't the one who made the baseless claim that Jesus was standing before Moses among the other Israelites, in Deuteronomy 18:18.
You are the one who is trying to squeeze Jesus into Deuteronomy 18:18 as if Jesus was Moses' contemporary.
Have you even bother to read the rest of Deuteronomy 18?
The first topic of Deuteronomy 18, is about the Levites. The Levites won't get any share of the land promised to Jacob like the other Israelite tribes WHEN THEY ENTER CANAAN ("they" as in Moses' contemporaries, Israelites, or KJV's "brethren"), but they will get special privileges of the Levite priesthood (18:1-8).
The next several topics are not follow any Canaanite religious practice - occult, which included witchcraft, sorcery, medium, divination and sacrificing children (18:9-11) - WHEN THEY ENTER CANAAN.
Now, if 18:1-8 and 18:9-13 are about what the Israelites should or shouldn't do WHEN THEY ENTER CANAAN, then it is very logical and within context of the whole chapter that when Deuteronomy 18:14-22 speak about the "new prophet", it is again talking about a prophet who will lead them into Canaan, just as Moses had led them out of Egypt.
What I am saying about the new prophet make more sense that this prophet is Joshua, if you read 18:8 WITH THE REST OF CHAPTER. The verses 18:14-22 is about who among Moses' presence will be nominated as this new prophet.
Sure, you can selectively ignore the whole chapter, and only read 18:8, and then choose any prophet in the bible, but you won't be reading in context of the whole Deuteronomy 18. And that only show me you can't read the whole chapter without twisting what was written in a single verse. This only show your poor scholarship and your biases when reading the bible.
Deuteronomy 18 is about what should or shouldn't happen when they enter the land of Canaan, including the new prophet being appointed to complete the other covenant since Moses leading his people from the land of Egypt.
You are simply making thing up, savagewind...or twisting a single verse to fit your propaganda.