No teachings should remain stagnant, nor should they have be without impact...if they are to make that scratch upon you, they require teeth. Serpents most definitely have teeth.
As you work with these beings, know that they'll lead you to a place of healing, but it won't always be what you expect. Sometimes, the place of healing is selfish and counterintuitive, but you feel it in your bones and the bones of the serpents you hold. That resonance leads to the ability to create echoing change.
Expect that your deepest, darkest fears will be brought to light and that you'll need to work through them. Expect that your dreams and visions will become more potent and present, and that they will show you what you need to see, not what you want to see.
Serpents & shadows intertwine. This is the way of things.