Shall be known - literally, “shall be made to know” (Judges 8:16, margin) in the sense of exposed.

Walketh surely.— He has no cause to fear that anything to his discredit should come out, but can trust quietly in the Lor…

He that walketh uprightly walketh surely
Or, "that walketh in perfection" ^F3 as the Targum. Not that walk…

Fools are not fit to be trusted, nor to have any honor. Wise sayings, as a foolish man delivers and applies them, lose their usefulness.