30 What other considerations can We offer to describe the increase of the priest's power, his service, his love and sacrifice for the entire people of God? Christ spoke of Himself when He said: "Unless a grain of wheat falls into the earth and dies, it remains alone; but if it dies, it bears much fruit." (53) And the Apostle Paul did not hesitate to expose himself to a daily death in order to obtain among his faithful glory in Christ Jesus. (54) In a similar way, by a daily dying to himself and by giving up the legitimate love of a family of his own for the love of Christ and of His kingdom, the priest will find the glory of an exceedingly rich and fruitful life in Christ, because like Him and in Him, he loves and dedicates himself to all the children of God.
Source: Sacerdotalis Caelibatus (Vatican.va)