Passage
It is necessary therefore, that of the men who have assembled with us all [the] time in which the Lord Jesus came in and went out among us,
It is necessary therefore, that of the men who have assembled with us all [the] time in which the Lord Jesus came in and went out among us,
Acts 1:19 And it was known to all the inhabitants of Jerusalem, so that that field was called in their own dialect Aceldama; that is, field of blood.)
Acts 1:20 For it is written in [the] book of Psalms, Let his homestead become desolate, and let there be no dweller in it; and, Let another take his overseership.
Acts 1:21 It is necessary therefore, that of the men who have assembled with us all [the] time in which the Lord Jesus came in and went out among us,
Acts 1:22 beginning from the baptism of John until the day in which he was taken up from us, one of these should be a witness with us of his resurrection.
Acts 1:23 And they appointed two, Joseph, who was called Barsabas, who had been surnamed Justus, and Matthias.
The verse centers on "necessary", "therefore", "assembled", "time", "lord", "jesus", "came", and "went". It is saying that the verse draws attention to "necessary" and "therefore", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 20's "For it is written in the book..." into verse 22's "beginning from the baptism of John until...", so "necessary" and "therefore" belong inside that flow. In Acts context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "necessary" and "therefore" with trust shaped by these words, not by a vague optimism outside the passage.