Barbara Henning, the wife of British hostage Alan Henning, has urged his Islamic State captors to "please release him, we need him back home".
The 47-year-old aid worker was captured by militants in Syria last year and has been threatened with death by his Islamic State captors.
The brother of David Haines, the British hostage murdered by Islamic State militants, said he does not blame Islam for the killing.
"I have become aware of a number of verses in the Koran that I feel particularly apt at this time," Mike Haines told reporters.
He then read:
He added: "The Muslim faith is not to blame for Isil, nor is it the fault of people of Middle Eastern descent.
"The attraction of complete control and the use of terror as an implement of population control has a widespread appeal to many disenfranchised throughout society."
The oldest member of Alan Henning's family has demanded boots on the ground to combat Islamic State militants who killed their beloved Alan.
The wife of a British aid worker held by Islamic State militants has recorded a message to his captors appealing for his life to be spared.