João 11:39

Even though Martha had confessed her belief that Jesus would raise the dead she did not understand that Jesus planned to raise her brother immediately. Jesus had given her no reason to hope that He would. The Jews customarily wrapped the bodies of their dead in cloth and added spices to counteract the odors that decomposition produced. They did not embalm them as thoroughly as the Egyptians did. [Note: Sanders, p. 274, footnote 1.]

Interestingly Martha did not appeal to Jesus on the basis of the ritual uncleanness that contact with a dead body would create for the Jews. Perhaps she had learned that ritual uncleanness was not something that bothered Jesus. Her concern was a practical one in harmony with her personality as the Gospel writers presented it.