In telling of his own salvation, Paul again makes plain what "believe on the Lord Jesus" means: "I know him whom I have believed and am persuaded that he is able to keep that which I have committed to him against that day." Notice this declaration as to the apostle's salvation: "I know him." A man must "know him" or he cannot "believe on" Christ. He can _risk_ Him without knowing Him, but he cannot _believe on_ Him, cannot _trust_ Him for salvation. It does not mean, know Him in every respect, as to how His divine and human nature could be united; as to how He could have had eternal existence; as to how His resurrected body could appear and disappear, etc., but to know Him in His character as Saviour. In trusting money to a bank one does not need to know how much German or French or English blood there is in the bank officials. In trusting one's case to a physician, one does not need to know the different nationalities from which he is descended, but he needs to know him in his character as physician. So men must know Jesus in His character as Saviour, or they cannot believe on, trust Him to save them. They must, then, know Him as the Messiah, the promised Saviour, the complete sin-bearer, or they cannot believe on Him. But after one knows the bank, he must commit his money to the bank, else the bank is not responsible for it. After one knows the physician, he must commit his case to the physician, else the physician is not responsible. And so Paul says, "I am persuaded that he is able to keep that which I _have committed unto him against that day_." No one, then, is redeemed, is saved, who has not committed his salvation to Christ against that day. Let the reader get clearly the meaning of "commit." No one has committed money to the bank who yet holds to the money; no one has committed a package to the express company who yet holds to the package; no one has committed a letter to the post-office for delivery who yet holds to the letter. So no one has committed his salvation to Christ, no one is redeemed, is saved, who yet holds to the work of his salvation. He must _commit_ it to Christ.