2Tim. 1.12
A brief of Paul's defense before Nero's court.
The Gk is "my deposit" the metaphor is the action of one person entrusting another with some precious deposit, to be kept for a time and restored whole and uninjured.
Point: What did Paul committ or entrust to God? 1) the gospel; 2) Paul's work; 3) souls in Paul card; 4) the welfare of his own soul. The context of Paul facing his own execution seems to point to #4 above.
At the end, Paul had no nagging uncertainty, no shadow of doubt, no wanning confidence in the Lord.
Not ground upon what he had done, but upon whom he had believed and trusted.