Luke
Luke 1:21ESV·traditional attribution

And the people were waiting for Zechariah, and they were wondering at his delay in the temple.

John Calvin Reformed @genevareformer

21. And the people were waiting Luke now relates that the people were witnesses of this vision. Zacharias had tarried in the temple longer than usual. This leads to the supposition that something uncommon has happened to him. When he comes out, he makes known, by looks and gestures, that he has been struck dumb. There is reason to believe, also, that there were traces of alarm in his countenance.

Matthew Henry Presbyterian @wholebiblehenry

The two preceding evangelists had agreed to begin the gospel with the baptism of John and his ministry, which commenced about six months before our Saviour's public ministry (and now, things being near a crisis, six months was a deal of time, which before was but a little), and therefore this evangelist, designing to give a more particular account than had been given of our...

Commenting on Luke 1:5-25

John Gill Reformed Baptist @doctorgill

And the people waited for Zacharias,.... That were without, in the court of the Israelites, praying there, while he was offering incense: these were waiting for his coming out, in order to be blessed by him, according to Num 6:23 and be dismissed: and marvelled that he tarried so long in the temple; beyond the usual time of burning incense; which might be occasioned either...