"Sheep May safely graze" does have words.... "Shafe konnen sicher weiden" from the Secular Cantata, No 208 by J.S.Bach... translated by Ronald Duncan in the Penguin book of accompanied songs....

Sheep may always graze in safety
when a shepherd guards them well
Sheep may always graze in safety
Sheep may always graze in safety
when a shepherd guards them well
when a shepherd guards them well

Led by wise and careful rulers
Men may live in peace and plenty
And enjoy their time on earth
Led by wise and careful rulers
Men may live in peace and plenty
Men may live in peace and plenty
And enjoy their time on earth

repeat first verse

My favourite air is "An buachaillin ban", "The Dear Irish Boy"

slainte

alison