35 Grk “And an angel.” Because of the difference between Greek style, which often begins sentences or clauses with “and,” and English style, which generally does not, δέ (de) has not been translated here.
36 Or “the angel of the Lord.” Linguistically, “angel of the Lord” is the same in both testaments (and thus, he is either “an angel of the Lord” or “the angel of the Lord” in both testaments). For arguments and implications, see ; M. J. Davidson, “Angels,” , ; W. G. MacDonald argues for “an angel” in both testaments: “Christology and ‘The Angel of the Lord’,” Current Issues in Biblical and Patristic Interpretation, 324–35.
37 This term is often used to describe a supernatural appearance (24:34; Acts 2:3; 7:2, 30, 35; 9:17; 13:31; 16:9; 26:16).

In other versions

And there appeared to him an angel of the Lord standing on the right side of the altar of incense.

Then an angel of the Lord appeared to him, standing at the right side of the altar of incense.

An angel of the Lord appeared to him, standing to the right of the altar of incense.

While Zechariah was in the sanctuary, an angel of the Lord appeared to him, standing to the right of the incense altar.

And an angel of the Lord appeared to him, standing at the right side of the altar of incense.

And there appeared unto him an angel of the Lord standing on the right side of the altar of incense.

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