Jude was attempting to write to the believers about their common salvation in and through the Person and Work of the Lord Jesus Christ. He had really intended to write a letter presenting the cardinal doctrines of the Christian Faith. The word contend is a word used of athletes battling it out in an athletic contest. The battle is vigorous, intense, and there is a determined effort to bring the opposition to a place of defeat. In fact, the struggle is such that personal agony throughout the effort is expressed.
Truth is another thing worth fighting for.
Standing up for the cardinal beliefs, teachings, truths of God's Word, is definitely a lost art today. Let me just say, when you stand up for the faith, you are fighting for your loved ones. God's truths are what insure the protection of your family as well as the freedoms we enjoy in this country. Those who are attempting to drive the American people from the truths of God's Word are the very ones who wish to control our lives, take our freedoms away, and ultimately harm the lives of our loved ones. The truths of God's Word will not change in midstream.