In the church service, the preacher was using the lectionary reading, which was Numbers 21:4 - 9, the bit about Moses making a bronze snake. (Well...thanks to an error of communications, we nearly had Numbers 4:9 - 10, but that's another story...).
Apart from making the observation that it seems a weird reading for Mothering Sunday, the preacher talked a lot about cures for snakebite.
Trouble is, every time he mentioned snakebite, I know he was talking about this, but I was mentally parsing it as this.
Which may not be quite the image he was trying to conjure up... ^_^