What would have happened if Moshe went according to Hashem
קח את המטה - Moshe, take the staff to show my glory and so everyone knows the miracle is from me! And teach the rock words of Torah = life, to arouse life in the rock.
Moshe and Ahron were given the consequence of not going into EY because they missed an oppurtunity to elevate the yidden. לכן = oath. Now when they sin, hashem can be more lenient when judging their sins because they never lived under ideal conditions and never went into EY with Moshe and Aharon
Moshe and Ahron are now going into EY with the Yidden and building the BH, but when they sin, Hashem will have to punish the Yidden beacuse the BH is permanent and can't be destroyed. They are also now living like in the times of Moshiach since they overcame all desires and impurity. So perhaps Moshiach would be here already..!