Genesis 49:17

American Standard Version (1901)

Dan shall be a serpent in the way, An adder in the path, That biteth the horse’s heels, So that his rider falleth backward.

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And of the Danites that could set the battle in array, twenty and eight thousand and six hundred.

Dan shall judge his people, As one of the tribes of Israel.

I have waited for thy salvation, O Jehovah.

At the last it biteth like a serpent, And stingeth like an adder.

If the serpent bite before it is charmed, then is there no advantage in the charmer.