Und die anderen religionen? (What About The Other Religions? German)

This book deals with the topic which often leads to heated discussions. There are so many religions. Are they all wrong? Is there only one single correct one, or do all ultimately lead to the same goal? People with other religions are honest in their beliefs. They perform their prayers and sacrifices sincerely and trust fully in their religion. Surely God must see it that way? If God is a God of love, must He not recognise all efforts to reach Him?