Musar su Isaia 6:3

This is what scripture says: "the whole earth is full of His glory" (Isaiah 6:3), and "Do I not fill heaven and earth?" (Yirmiyahu 23:24), and "Who is like the L-rd, our G-d, enthroned on high, who stoops to look down on the heavens and the earth?" (Tehilim 113:5-6), and "though the L-rd is high, yet He sees the lowly, and the proud He knows from afar" (Tehilim 138:6).

The matter of holiness is dual. Its beginning is service [of G-d] while its end is reward; its beginning is exertion while its end is a [divine] gift. That is, its beginning is that which a man sanctifies himself, while its end is his being sanctified. This is what our sages, of blessed memory, said: "if a man sanctifies himself a little, he becomes much sanctified. If he sanctifies himself below, he becomes sanctified from above" (Yomah 39a).