Faith Once Delivered Unto the Saints

Why does Jude use the term 'beloved' in his writing? Why does God get all the glory in all things especially salvation? How could a Holy God love Jacob? What is the Faith? Why must the Gospel be defended and from who? Who is the Faith delivered to? What is the important difference between what men call faith and what God calls Faith in His Word? Why must Faith have an Object?Is God sovereign in all things? Why will man, left to himself only be able to do that which is contrary to God? Why is Christ called the Eternal Author of Salvation?