OK, maybe a bit harsh... This is not a reall sign, and this is not what I believe.
But what if Calvinists actually wrote on their signage what they believe.
Many Calvinist theologians believe that God hates sinners.
If God hates sinners, shouldn't we? We are to strive to be about our Fathers business... follow Jesus... etc.
The logic is crazy... so I put "Fun-Da-Mental".