20 »There were seven brothers the first took a wife, and dying left no seed.
Mark 12:20 Cross References - NSB
Matthew 22:25-28
25 »There were seven brothers. The first married and died, and having no children, left his wife to his brother.
26 »The same happened to the second, right on through the seventh.
27 »After that the woman died.
28 »In the resurrection, with which of the seven will she be married? All seven had her.«
Luke 20:29-33
29 »There were seven brothers. The first took a wife, and died childless.
30 »The same for the second.
31 »The third married her. The remaining of the seven also married her, left no children and died.
32 »Afterward the woman also died.
33 »In the resurrection whose wife shall she be? All seven married her.«