Book of Common Prayer (page 43)

One of the following Antiphons may be sung or said with the Invitatory
Psalm

In Advent

Our King and Savior now draweth nigh: O come, let us adore him.

On the Twelve Days of Christmas

Alleluia. Unto us a child is born: O come, let us adore him.
Alleluia.

From the Epiphany through the Baptism of Christ, and on the Feasts of
the Transfiguration and Holy Cross

The Lord hath manifested forth his glory: O come, let us
adore him.

In Lent

The Lord is full of compassion and mercy: O come, let us
adore him.

From Easter Day until the Ascension

Alleluia. The Lord is risen indeed: O come, let us adore him.
Alleluia.

From Ascension Day until the Day of Pentecost

Alleluia. Christ the Lord ascendedeth into heaven: O come,
let us adore him. Alleluia.

On the Day of Pentecost

Alleluia. The Spirit of the Lord filleth the world: O come,
let us adore him. Alleluia.

On Trinity Sunday

Father, Son, and Holy Spirit, one God: O come, let us
adore him.