Those Whimsical Billboards

Friends in various parts of the country have noted whimsical billboards which come and go in various locations.  The signs are black with white lettering, and the short messages are signed "God."  The messages typically offer guidance for the worldly, expressed in somewhat whimsical phrasing.  Bob "Spud" Riley sent this graphic, which changes every few seconds, and includes 18 of the signs.  We offer it here as a curiosity.