The same point was made earlier by the Kotzker Rebbe. The Kotzker asked his Chassidim, “If you see two people on a ladder, one on the fourth rung and one on the tenth, which is higher?” The chassidim, probably knowing it was a leading question, answered the obvious, “The one on the tenth rung.” “No,” the rebbe replied, “he might be descending the ladder. It is the one who is climbing upward.”
When we stand for Shemoneh Esrei we do so with our feet together to emulate the angels. “Veragleihem regel yisharah – and their legs are one straight leg [each].” (Yechezqeil 1:7) Angels stand on a single leg, a pedestal, stationary. As Zechariah (3:7) repeats Hashem’s message to Yehoshua Kohein Gadol, “then I will give you to walk (mehalkhim) among these that stand still (ha’omedim).” People are mehalkhim, goers; angels, omedim, standing still.
Angels might be on a higher rung on the ladder, but since only people have the power to ascend it, we have the potential to be loftier.
This is because we have free will, the ability to make and remake ourselves. The power of teshuvah.
In short, life is a journey, not a destination.
And so, Mas’ei benei Yisrael, the journey and growth in the desert, was to imbue the Jewish people with the essence of being a nation of kohanim. Therefore, it truly is His Name, a representation of Hashem’s Presence in this world.