Precept must be upon precept; they must be taught, like little children, slowly, and by leisure; the same things being oft repeated, because of their great dulness. Line upon line; one line of the book after another, as children are taught to read.
Related Commentaries of Isaiah 28:10
Isaiah 28:10
10 For precept must be upon precept, precept upon precept; line upon line, line upon line; here a little, and there a little: