AC 8340 - ancient choirs

AC 8340.
And Miriam answered to them.
That this signifies what is reciprocal,
is evident from the signification of "answering,"
when the glorification of the Lord by means of a song is treated of,
as being what is reciprocal.
In holy worship among the ancients
it was also customary to sing by means of choirs,
that there might be one or more to answer;
by which was represented reciprocation and response,
such as is that of the church from heaven, and of heaven from the Lord.