He also reminds Timothy that God has provided us with a spirit of power and of love and of self-discipline--and that all those are needed because discipleship may entail suffering.
He also gives credit to his ancestors by saying that he worships as they did. he did not believe that Christians worship a different God from the One worshiped by Jews. Further, he asserts that the grace given to them was given long before it was revealed through the appearance of Christ, Allen &Williamson, in Preaching the Letters, explain it this way:
What Paul exactly meant, we do not know, but the gracious disposition of God to God's creatures seem always to have been the case; our good fortune is that because of God's self-disclosure we know this.Although Paul is undergoing suffering because of work, he is confident of God's protection. He tells Timothy to hold on to what he has been taught, "Guard the good treasure entrusted to you," and that he will also be aided, "with the help of the Holy Spirit living in us."
Jouette Bassler, in her commentary on 1 Timothy, 2 Timothy, Titus in the Abington New Testament Series, writes about Paul's view of suffering:
He presents suffering as inevitable for any Christian and essential for any church leader. Through suffering, a church leader identifies himself with Paul and manifests his confidence in the fundamental Christian promise of life. Failure to endure sufering suggest shame--not shame in the cross of Christ of Christ, but a lack of confidence in God's power to save."