Selina Huntington Campbell remembered in 1882 that

Dear Mr. Campbell was a lover of good music; he had when young received lessons in the art, but, as he said, “was born tuneless;” he understood time and loved to make a “joyful noise.” He could almost sing  “Hail the blest morn! When the great Mediator ” etc., and when riding together, through the vales and over the hills of Bethany, he was sure to commence with ecstacy : “’Tis not the law of ten commands,” but  always turned to the last verse :

“Israel, rejoice, now Joshua (Jesus) leads,

He’ll bring your tribes to rest;

So far the Saviour’s name exceeds,

The ruler and the priest.”

Ahh, the wonders of the internet, where an easy search of YouTube brings us here:

Authored by Reginald Heber (perhaps best known for Holy, Holy, Holy), the tune you hear in the clip is…