Paul authors the book of II Timothy while he is in prison under Emperor Nero.
He senses that his life will soon come to an end. His concern is to encourage Timothy to carry on in Christian ministry.
Very clearly, Paul reiterates that works do not account for salvation, it is only given through God's grace.
He encourages Timothy to share his testimony 1:8-9 "So do not be ashamed to testify about our Lord, or ashamed of me his prisoner. But join with me in suffering for the gospel, by the power of God, who has saved us and called us to a holy life - not because of anything we have done, but because of his own purpose and grace."
In 2:23-25, Timothy is given advice, "Don't have anything to do with foolish and stupid arguments, because you know they produce quarrels. And the Lord's servant must not quarrel; instead, he must be kind to everyone, able to teach, not resentful. Those who oppose him he must gently instruct, in the hope that God will grant them repentance leading them to knowledge of the truth..."
In 3:16 Paul reminds Timothy that "All Scripture is God-breathed and useful for teaching, rebuking, correcting and training in righteousness, so that the man of God may be thoroughly equipped for every good work."
Paul reflects over his 30 years of serving the Lord and shares with Timothy, "For I am already being poured out like a drink offering and the time has come for my departure. I have finished the race, I have kept the faith."
Clearly, Paul anticipates that his own life will soon come to an end. He encourages Timothy to carry on the good work of sharing the gospel of Jesus Christ.