20 Matrimony, according to the will of God, continues the work of the first creation; (22) and considered within the total plan of salvation, it even acquired a new meaning and a new value. Jesus, in fact, has restored its original dignity, (23) has honored it (24) and has raised it to the dignity of a sacrament and of a mysterious symbol of His own union with the Church. (25) Thus, Christian couples walk together toward their heavenly fatherland in the exercise of mutual love, in the fulfillment of their particular obligations, and in striving for the sanctity proper to them. But Christ, "Mediator of a superior covenant," (26) has also opened a new way, in which the human creature adheres wholly and directly to the Lord, and is concerned only with Him and with His affairs; (27) thus, he manifests in a clearer and more complete way the profoundly transforming reality of the New Testament.
Source: Sacerdotalis Caelibatus (Vatican.va)