King James Version
Dan shall be a serpent by the way, an adder in the path, that biteth the horse heels, so that his rider shall fall backward.English Standard Version
Dan shall be a serpent in the way, a viper by the path, that bites the horse's heels so that his rider falls backward.New International Version
Dan will be a serpent by the roadside, a viper along the path, that bites the horse's heels so that its rider tumbles backward.