Book of Common Prayer (page 271)

Year A Matthew 21:1-11

Year B Mark 11:1-11a

Year C Luke 19:29-40

The Celebrant then says the following blessing

Celebrant The Lord be with you.

People And also with you.

Celebrant Let us give thanks to the Lord our God.

People It is right to give him thanks and praise.

It is right to praise you, Almighty God, for the acts of love by
which you have redeemed us through your Son Jesus Christ
our Lord. On this day he entered the holy city of Jerusalem in
triumph, and was proclaimed as King of kings by those who
spread their garments and branches of palm along his way.
Let these branches be for us signs of his victory, and grant that
we who bear them in his name may ever hail him as our King,
and follow him in the way that leads to eternal life; who lives
and reigns in glory with you and the Holy Spirit, now and for ever.
Amen.

The following or some other suitable anthem may then be sung or said

Blessed is he who comes in the name of the Lord.
Hosanna in the highest.

The Procession

Deacon Let us go forth in peace.

People In the name of Christ. Amen.

During the procession, all hold branches in their hands, and
appropriate hymns, psalms, or anthems are sung, such as the hymn "All
glory, laid, and honor" and Psalm 118:19-29.

At a suitable place, the procession may halt while the following or
some other appropriate Collect is said