“Do you trust me? Do you feel I can get you through this night?”
They looked unsure. Slowly, each nodded. One even spoke, “I believe you can get me through this night.”
“Good. I believe we can reach the morning light. Now here is what we need to do…...”
Temple of some malign being invites you warmly and offers help (curing,needed spell etc) for some minor sacrifice . Sacrifices must be everytime bigger to work - up to living inteligent creatures. Maybe you pay some other price,too...