Summary of comments of this office by Dom Schuster, in his work L'année liturgique.

Instead of being taken from the psalter, the Introït is taken from Ecclesiasticus (36:18) and so begins a cycle of antiphons special and proper to the last Sundays after Pentecost. "Give peace, O Lord, to them that patiently wait for Thee, that Thy prophets may be found faithful: hear the prayers of Thy servant, and of Thy people Israel."

The Gradual, taken from Psalm 121, is the same as for the 4th Sunday of Lent , but today it is chosen in harmony with the antiphon of the Introit, where peace is also invoked.

The versicle of the Alleluia is taken from Psalm 101 and prophesies the transcendence of the New Alliance, to which the Gentiles together with their kings will adhere.

The antiphon for the Offertory is composed of divers passages borrowed from Chapter 24 of the Book of Exodus; it treats of the solemn sacrifice by which Moses sealed with the blood of victims the alliance between God and Israel. It is unfortunate that in the Roman missal this splendid Offertory is reduced to the initial verse. In the ancient antiphonaries the composition had the magnificence of a true liturgical drama.

The antiphon for the Communion is borrowed from Psalm 95. "Bring up sacrifices, and come into His courts: adore ye the Lord in His holy court."