What does the proverb blood is thicker than water means?

Question

What does the proverb blood is thicker than water means?

Answer 1

it means that the ties that bond family members are stronger than any other bonds

Answer 2

It means that family members will always come first before acquaintances.

Answer 3

Family first, family will always be there for you ...

I will be the first to say this is not true I see far too many families fall apart, separate, back stab, etc ... on very serious things all of the time.

Answer 4

The bonds of family and common ancestry are stronger than those bonds between unrelated people.