Unless they are spayed or neutered, I would not try it. Intact rabbits tend to fight as they reach maturity, about 4-6 months. It does not matter if they are related or raised together from birth. On top of that, intact rabbit will breed and you can quickly become overwhelmed with too many rabbits.
If they are all neutered and you wait about 6-8 weeks after, it can work out. Same sex pairs can work, but not always. The best combination is a male and female where both are neutered.
You need to take bonding slowly. You can't just put them in the same cage and expect them to get along. You need to start with them on neutral territory, like a bathroom or area neither rabbit is used to. It can be good to have a barrier between them at first so they can meet but not get at each other. As they get used to each other, there should be grooming and cuddling. Some humping and chasing is normal at first, but it should not progress to fights or where one is constantly going after the other. As they get more used to each other, you can bring them to the area where they will be living, this may mean that you have to go back a few steps especially if it is one of the rabbits territory.
Some rabbits don't get along no matter how much you try. With these situations, it is just best to keep them apart and make sure they can't get at each other.
Bonding more than 2 rabbits can be tricky. It would probably be best to do it all at once rather then doing pairs and adding to it. Try introducing them in pairs and switch who sees who each time so they all get used to each other. Then progress to having 3 in at once, then all 4. It may take longer to get them all together. Be prepared for them all to not get along and end up having 2 pairs or even a single and a trio.