When you get the brush out he runs away, which results in a ten minute game of chase even before you start grooming. Then once you have him cornered, he mouths the brush and tries to bite it, which makes brushing near impossible.
But this was only the beginning of the trouble. The dog soon wised up to the fact that if he mouthed the brush and growled, the grooming session came to an abrupt end. You quickly realized what he was up to and so refused to be beaten, but when you forcibly restrained him to be brushed you ended up with a squirming dog, a sprained wrist, and only just avoided being bitten.
Ideally, start off with a puppy, by being sure to handle all parts of his body and praising him for being tolerant. But if you have an adult dog that has already become brush shy, you may need to go back to basics. If the dog's coat is already knotted, then you may need to accept him having a professional clip in order to get a blank canvas to work with while you retrain him.
Never force the issue, since this will only teach the dog to be more resentful of the brush, not less. If the dog is being 'silly' about the brush, then a short firm verbal "No" is acceptable, but if the dog doesn't desist with this, then withdraw your attention from the dog and try again another time.
The equipment you need includes: