Malachi 3:1
1 “Behold*, I am about to send my messenger, who will clear the way before me. Indeed, the Lord you are seeking will suddenly come to his temple, and the messenger of the covenant, whom you long for, is certainly coming,” says the Lord of Heaven’s Armies. 2 Who can endure the day of his coming? Who can keep standing when he appears? For he will be like a refiner’s fire, like a launderer’s soap. 3 He will act like a refiner and purifier of silver and will cleanse the Levites and refine them like gold and silver. Then they will offer the Lord a proper offering.
Luke 1:20
19 The angel answered him, “I am Gabriel, who stands in the presence of God, and I was sent to speak to you and to bring you this good news. 20 And behold61 because you did not believe my words, which will be fulfilled in their time, you will be silent, unable to speak, until the day these things take place.” 21 Now the people were waiting for Zechariah, and they began to wonder why he was delayed in the Holy Place.
Notes and References
"... There are some other simple allusions to Malachi in Luke. One of them is the Greek word (behold). Though the Greek word (behold) often occurs in Luke, it is especially used to emphasize John's birth (1:20) and Jesus' birth (1:31, 35). It is reminiscent of the Hebrew word (behold) which is twice used in Malachi 3:1, linked with two different eschatological figures' arrival. In light of the study of the relationship between Malachi and Luke, Luke must have had in his mind Malachi's eschatological figures - Elijah and Ha Adon - when he recorded John's and Jesus' birth. The citation in Luke 6:46 may be an allusion to Malachi 1:6 perhaps based upon the form and spirit of the rhetorical question posed by Jesus. Doble surmises that the Coming One may be suggested in Luke 7:16, and he seems to link the Coming One concept to Malachi‘s eschatological Elijah ..."
Lee, Paul Byeong Malachi's Eschatological Figures' Arrival Motif in the Gospel of Luke and its Relation to other Gospels (pp. 250-251) University of Pretoria, 2010