Rashi, on Isa 30:20

“And the Lord will give you spare bread, and short water: and will not cause thy teacher to flee away from thee any more, and thy eyes shall see thy teacher.”

“scant bread and water of oppression You shall not run after pleasures as you do now, as it is said (Amos 6:6): “Who drink from basins of wine.” (Above 22:13) “And behold joy and happiness.” shall no longer be concealed (לֹא יִכָּנֵף) shall not be covered from you with the skirt of His garments, i.e., He shall not hide His countenance from you. your Teacher The Holy One, blessed be He, who teaches you for your profit.”

Imported from an open dataset — not yet checked against the printed edition.