Faith involves doing hard things. And obedience to God reflects belief in God and God’s word. Martha would have to put her belief on the line in front of her sister, in front of all those religious dignitaries, in front of all their extended family and people who had come down from Jerusalem.
[In the Greek] Though Martha’s voice had leaned more heavily on the final catastrophe of death itself, Mary spoke from the devastation of personal betrayal, her voice leaning on the connection of her brother, the unspoken meaning clear: you said you loved me, and he was my brother.
Jesus had received a message from Mary and Marth of Bethany, Lazarus was gravely ill. But rather than come to them, Jesus sent word back that Lazarus’ illness was not to death but to God’s glory.
What God does is always a reflection of God’s character and in keeping with God’s glory, and all this is displayed in the lives of every believer. Those who believe God see God’s glory in everyday circumstances.