When Jesus came the first time it was John the Baptist who was
preaching. But the second coming of Jesus is prepared by
singing(though both preaching and singing will take place)
Isa. 42:10-13
Sing to the Lord a new song,
his praise from the ends of the earth,
you who go down to the sea, and all that is in it,
you islands, and all who live in them.
Let the wilderness and its towns raise their voices;
let the settlements where Kedar lives rejoice.
Let the people of Sela sing for joy;
let them shout from the mountaintops.
Let them give glory to the Lord
and proclaim his praise in the islands.
The Lord will march out like a champion,
like a warrior he will stir up his zeal;
with a shout he will raise the battle cry
and will triumph over his enemies.”