Never believe a wicked person even if he is talking in (your) favor. There is honey on his toung’s tip (i.e. his language is sweet), but there is poison in his heart (i.e. his mind is full of wicked thoughts)
When it comes to comparison between a serpent and a wicked person, it is the serpent who is the better of the two. (Because,) a sperpent bites occasionally( very seldom). But, the wicked person stings(causes pain) at every step(always).