גַּם־זֹ֕את מֵעִ֛ם יְהוָ֥ה צְבָא֖וֹת יָצָ֑אָה הִפְלִ֣יא עֵצָ֔ה הִגְדִּ֖יל תּוּשִׁיָּֽה׃ (ס)
This also cometh forth from the LORD of hosts: Wonderful is His counsel, and great His wisdom.
Read kabbalistic (mystical) interpretation of Isaiah 28:29: and classical mystical sources.