In his classic book, The Person and Work of Christ, Benjamin B. Warfield has the following to say about Christ’s title of “Redeemer”:
There is no one of the titles of Christ which is more precious to Christian hearts than “Redeemer.” There are others, it is true, which are more often on the lips of Christians. The acknowledgement of our submission to Christ as our Lord, the recognition of what we owe to Him as our Saviour, – these things, naturally, are most frequently expressed in the names we call Him by. “Redeemer,” however, is a title of more intimate revelation than either “Lord” or “Saviour.” It gives expression not merely to our sense that we have received salvation from Him, but also to our appreciation of what it cost Him to procure this salvation for us. It is the name specifically of the Christ of the cross. Whenever we pronounce it, the cross is placarded before our eyes and our hearts are filled with loving remembrance not only that Christ has given us salvation, but that He paid a mighty price for it. (p.325)
Redeemer – it is the name of the Christ of the cross; and for that reason it is the most precious title of Christ to the heart of a believer!