19keeping your faith [leaning completely on God with absolute trust and confidence in His guidance] and having a good conscience; for some [people] have rejected [their moral compass] and have made a shipwreck of their faith.
19Then you will hold on to faith. You will hold on to a good sense of what is right and wrong. Some have not accepted this knowledge of right and wrong. So they have destroyed their faith. They are like a ship that has sunk.
19You must continue to trust God. Always do what you know to be right. Some people have refused to do what is right, even when they know what they should do. As a result, they no longer believe God's true message.