mourn with

See: sympathize
References in classic literature ?
The daylight came, and Chaka rose, saying, "Come, let us go forth, Mopo, and look on those who mourn with us." So we went out, and after us came men armed with clubs to do the bidding of the king.
Yet thou wouldst mourn with me an hour--is it not so?
"Mourn, people of the Langeni, mourn with the whole world!"