The tradition of the Roman Church marks the feast of the martyrs Pope Saint Sixtus and his four deacon companions on the 6th/7th of August by blessing the first grapes of the harvest. This is a sign that, with the feast of the Transfiguration, the Church has entered into a time of fullness, a time that looks for completion.
BLESSING OF GRAPES
V. Our help is in the name of the Lord.
R. Who hath made heaven and earth.
V. The Lord be with you.
R. And with thy spirit.
Let us pray.
Bless, we beseech Thee, O Lord, this fresh fruit of the vine,
which Thou hast graciously brought to full ripeness
with the dew of heaven, abundant rain, and calm and fair weather.
Thou hast given them for our use;
grant that we may receive them with thanksgiving
in the name of our Lord Jesus Christ, the True Vine,
who liveth and reigneth with Thee in the unity of the Holy Ghost,
God for ever and ever.
(And they are sprinkled with holy water.)