Do you have a learning deficiency or something? Perhaps it is that you are incapable of understanding that D’variym is the same book of the Bible that you chr-stians call Deuteronomy in your pagan Greek language. Read chapter 12 in its entirety; in fact read the entire book in its entirety it might just do you some good.
Chapter 12 in particular explains that once the children of Yis’raél cross the Yar’dén, or Jordan as you call it, and enter the promised land all sacrifices and offerings can only take place at the location He chooses to place His Name and Make His dwelling. They can no longer be performed wherever they are at. The Mish’kan was only temporary while they were in the wilderness.
D’variym 12:5 – “But only to the place which HaShem your God chooses from among all of your tribes to set His Name in that place; shall you inquire after His dwelling and come to that place.”
D’variym 12:6 – “And there you will bring your burnt offerings, and your sacrifices, and the contributions of your hands, and your vows and donations, and the firstborn of your cattle and your sheep.”
D’variym 12:7 – “And there you shall eat before HaShem your God, and you shall rejoice in all that you do, you and your households, as HaShem your God has blessed you.”
D’variym 12:8 – “You shall not do all the things as we do here today, everyone doing what he sees as right.”
D’variym 12:9 – “For you have not yet come to the resting place or to the inheritance which HaShem your God is giving you.”
Seems pretty simple and straight forward to me, I don’t know where you’re getting lost. But as I said before, read the entire book. Every single time God speaks of the place He chooses to place His Name and His dwelling, He is referring to the Temple.
I don’t know how you are incapable of understanding something as elementarily simple as this; perhaps you are blinded by your chr-stian goggles.