Augustine of Hippo : Paul says [elsewhere], "I have kept the faith," but the same apostle also says, "For I know whom I have believed, and I am certain that he is able to keep that which I have deposited with him against that day." "That which I have deposited with him" means: What I have commended to him, for some [Latin] copies do not have the word depositum but commendatum, which is clearer. Now what do we commend to God's keeping save those things which we pray he will preserve? Is not our very faith among these? For what did the Lord commend for the apostle Peter, by his prayer for him, when he said to him, "I have prayed for you, Peter, that your faith shall not fail"? This means that God would preserve his faith and that it would not fail by giving way to temptation. — PROCEEDINGS OF PELAGIUS 14.35 John Chrysostom : "For the which cause I also suffer these things, nevertheless I am not ashamed. For I know Whom I have believed, and am persuaded that He is able to keep that which I have committed unto Him against that day." "I am not ashamed," he says. For are chains, are sufferings, a matter for shame? Be not then ashamed! Thou seest how he illustrates his teaching by his works. "These things," he says, "I suffer": I am cast into prison, I am banished; "For I know Whom I have believed, and am persuaded that He is able to keep that which I have committed to Him against That Day." What is "that which is committed"? The faith, the preaching of the Gospel. He, who committed this to him, he says, will preserve it unimpaired. I suffer everything, that I may not be despoiled of this treasure, and I am not ashamed at these things, so long as it is preserved uninjured. Or he calls the Faithful the charge which God committed to him, or which he committed to God. For he says, "Now I commit you to the Lord." (Acts xx. 32.) That is, these things will not be unprofitable to me. And in Timothy is seen the fruit of the charge thus "committed." You see that he is insensible to sufferings, from the hope that he entertains of his disciples. — Homily on 2 Timothy 2 Oecumenius : For this reason I suffer as I do, but I am not ashamed, for I know whom I have believed, and I am convinced that he is able to guard what I have entrusted to him until that day. For this reason I suffer as I do. What then is that reason? Because I am a messenger and an Apostle. As if he were saying: I am not being overcome as a criminal and dragged to prison. but I am not ashamed. For the greatest glory is to suffer something for Christ. Do you see how Paul prepares the disciple for afflictions? You will show that if someone does not fear to be ashamed, the danger itself will be easier with the help of Christ. that he is able to guard my deposit. He calls the faith a deposit [παραθήκην], which Christ entrusted [παρέθετο] to him to preach. Either Paul means the believers, whom God entrusted to him to teach, or those whom he entrusted to God. "Behold, I entrust you to the Lord." (Acts 20:32) Among those entrusted is also Timothy. Therefore, Paul says: "for I know whom I have believed, and I am convinced that he is able to guard what I have entrusted to him until that day." — COMMENTARY ON 2 TIMOTHY Theodore of Mopsuestia : The "deposit" is the pledge of the Spirit given to Paul that he may be preserved. — COMMENTARY ON 2 TIMOTHY Theodoret of Cyrus : The "deposit" is the power and grace offered to Paul by the Spirit for serving the Lord. — INTERPRETATION OF THE SECOND LETTER TO TIMOTHY