Hearken to the sound of the trumpet.@Jeremiah 6:17

Charles E. Hauck, 1905, in Little Branches No. 4, edited by George G. Meyer, Thoro Harris, & Howard E. Smith (Chicago, Illinois: Meyer & Brother, 1906), number 1 (🔊 pdf nwc).

Hearken to the bugle call,
Let us rally one and all
In the ranks of our own Sunday School.

Every Sunday of the year
We will all assemble here
In the ranks of our own Sunday School.

We will many more invite
For the cause of truth and right
In the ranks of our own Sunday School.

Here together we’ll be taught
From the precious word of God
In the ranks of our own Sunday School.