Crucify.

This is coolbert:

Anyone familiar with the Islamic term ridda? This is analogous to apostasy?

"ISIS Crucifies Young Men For Leaving The Peaceful Religion of Islam"

"ISIS has crucified more young men for being accused of 'Ridda'."

"Ridda in Islam means defection from the religion."
....

"Crucifixions has become a normal occurrence in Syria and Iraq in which young men are seen crucified on trees .... And on scaffolds"
....

"Mass slaughter has become a way of life in Caliphate controlled areas:"

Ridda not necessarily changing your religion but rather not cleaving to the generally accepted principles and tenets thereof?

coolbert.