The Lord is well pleased; rather, the Lord was pleased, or it pleased the Lord. For his righteousness' sake; "because of his own perfect righteousness." He will magnify the Law; rather, to magnify the Law—to set it forth in its greatness and its glory before his people.
It is not the original giving of the Law at Sinai only that is meant, but also its constant inculcation by a long series of prophets. Israel's experience (verse 29) had included all this; but they had not profited by the instruction addressed to them.