In chapters 29-30 of The Grapes of Wrath: 1) The rain continues to pour as Rose of Sharon gives birth to a stillborn baby in the flooded boxcar. 2) The family finds shelter in an abandoned barn where they discover a starving man and boy. Rose of Sharon feeds the starving man her breastmilk, despite his protests. 3) Throughout their hardships, the Joads and other families work together to survive, realizing they must support each other to overcome challenges.