Four line poem

A man wrote down a simple tune,
one line after another.
The first line spoke of heaven,
how we should love each other.
The second line spoke of peace for all,
no war and no more pain.
The third line proclaimed God is king,
over all of life’s domain.
The fourth line had him on his knees,
for hope that he was praying.
That peace will fill the hearts of all,
that hear what this tune’s saying.