Paul speaks from a place of personal conviction and experience, acknowledging his suffering but also expressing a profound trust in God. He is not ashamed of his trials because his faith is rooted in a deep, personal knowledge of God. This knowledge is not just intellectual but relational, built on trust and experience. Paul is convinced that God is capable of safeguarding everything he has entrusted to Him, which includes his life, ministry, and eternal destiny.
This passage reassures believers that their faith is not in vain, even when they face difficulties. It emphasizes the importance of knowing God personally, which provides strength and confidence. The phrase 'until that day' refers to the day of Christ's return or final judgment, highlighting the eternal perspective that Paul holds. This eternal focus helps believers endure present hardships, knowing that God is faithful and will fulfill His promises. The verse encourages a steadfast faith, reminding Christians that their spiritual commitments are secure in God's capable hands.