נִיט עֲבוֹדָה אִיז אַז עֲבוֹדָה זאָל זַיין בֶּאֱמֶת

The concept of avodah — Divine service — does not [merely] mean that one must serve G‑d truthfully.

נאָר אֱמֶת אַלֵיין אִיז אַן עֲבוֹדָה

Rather, truthfulness is itself a form of Divine service,

אַז דִי נעֶגעֶל זַיינעֶן אֱמֶת

to the point that even one’s nails [i.e., the most superficial part of a person] should be [permeated by] truth.

וואָס וועֶרסְטוּ נִתְפָּעֵל

Why should this be so surprising?

מִדַּת הָאֱמֶת רָאָה (סַנְהֶדְרִין קיא. א) וְנָפַל עַל פָּנָיו

[After all,] it was the vision of G‑d’s Attribute of Truth [that caused Moshe to] fall on his face.

Text and Translation courtesy of Sichos in English