Spirit of the Age in the New Testament

What is a spirit? Is it a ghost? Do schools have school spirit? (“Then we need to hear it!”) What does it mean to be “spiritual”? The word “spirit” gets used all the time in Christian and other religious language, but it is almost never defined, at least not in a way that makes sense of how it is used in the Bible and other Christian texts. Fr. Stephen De Young and Fr. Andrew Stephen Damick do a close reading to focus on this core concept.