Exspectabo Dominum salvatorem meum, et praestolabor eum dum prope est. Alleluia.
(Judges 6:18 ((the angel of) the Lord to Gideon): . . . qui respondit ego praestolabor adventum tuum, And he answered: I will await thy coming.)
Isaiah 8:17: et expectabo Dominum qui abscondit faciem suam a domo Iacob et praestolabor eum, And I will wait for the Lord, who hath hid his face from the house of Jacob, and I will look for him.
Isaiah 55:6: quaerite Dominum dum inveniri potest invocate eum dum prope est, Seek ye the Lord while he may be found: call upon him, while he is near.
Micah 7:7: ego autem ad Dominum aspiciam expectabo Deum salvatorem meum audiet me Deus meus, But I will look towards the Lord, I will wait for God my Saviour: my God will hear me.
I shall wait (etymologically, look out) for the Lord my Savior, and stand ready for him when he is near. Alleluia.
Antiphon to the Benedictus, Morning Prayer, Thursday of the First Week of Advent, Liturgy of the hours:
I shall wait for my Lord and Saviour and point him out when he is near, alleluia.
Image from Sankt Gallen,Stiftsbibliothek, 390, p. 21 (c. 980 or later), the fourth oldest occurrence of this antiphon in the database CANTUS (the oldest being Albi, Bibliothèque municipale Rochegude, 44 (c. 890)).