The verb in this sentence is in the passive voice.
As Bede, the writer, was a devout Christian, he used many references to Christianity in his work. Jesus Christ was considered a shepherd to his flock as he led people out of sinful lives into sin-free lives. Similarly, Caedmon is said to have led people away from their vices and toward the path to heaven through his song. A cowherd was also a person at the bottom of the social ladder. This fact might be meant to imply that through divine grace, even a man from a humble background may change many lives.
The law of conservation of energy is an important law of physics. Basically, it says that while energy can turn from one kind into another, the total amount of energy doesn't change. This law applies only to closed systems, meaning systems that can't exchange energy with their environment
Success is the abstract word. It is not an object.
False. Information that is not your own must always be cited in order to avoid plagiarism.