by Carey Lodge
"...I heard how they shouted but I could not help." The pastor and his wife were forced to run into the bush with their five younger children to escape the militants, but their older daughters were taken away.
Marta told the BBC: "When we found out Boko Harm had kidnapped our girls, I was distraught. I've never recovered. I am still in terrible pain."
Several weeks after the abduction, Boko Haram released footage of 136 of the schoolgirls, purporting to show them having converted to Islam. The girls were shown dressed in the full Muslim hijab and reciting the Quran.
"I was told that my daughter refused to change her religion. I was told that they dug a hole and buried her from the neck and stoned her to death," he said.
"To die for the sake of Christ, that's the happiest thing for me. I'm grateful that she didn't change her religion. She trust in God..."