What dangers in the valley?

A sheep on a hill on his own,
far away sees the mountains of home.
He’d like to arrive there for sure,
but the valley between is obscure.

It’s filled with a cloud, so unknown
the dangers he’ll meet going down.
The fog thins – he sees that he’ll pass
much danger, but green fields of grass.

I see heaven’s glory ahead,
but going there I will be led –
my Shepherd protects and will teach,
enabled, his glory I’ll reach.

Tune: 88 88 (anapeastic?) eg Celeste (tune of ‘How good is the God we adore’)