in all My holy mountain. This expression occurs in the "former" portion only here and Isaiah 27:13, and in the "latter "portion in Isaiah 56:7; Isaiah 57:13; Isaiah 65:25. It is to be distinguished from other expressions in which the word "mountain" occurs.
shall be. shall assuredly become.
the knowledge. This is the sign of the fulness of blessing. See note on Isaiah 1:3. Compare Isaiah 6:3. Reference to Pentateuch (Numbers 14:21). App-92.