I am the Lord, I change not.
Malachi 3:6

Words: James H. Evans (1785–1849).
Music: Sherborne (Musgrave) John T. Musgrave (🔊 pdf nwc). Appeared in The Hymnal Companion to the Book of Common Prayer with Accompanying Tunes, 3rd edition, revised and enlarged, edited by David J. Wood & John Stainer (London: Sampson Low & Marston, 1893), number 287.
If you know where to get a good photo of Musgrave (head & shoulders, at least 200×300 pixels),
Change is our portion here;
Soon fades the summer sky,
The landscape droops in autumn sear,
And spring flowers bloom to die:
But faithful is Jehovah’s word,
I will be with thee,
saith the Lord.
Change is our portion here;
Along the heavenly road:
In faith and hope and holy fear,
In love towards our God:
How often we distrust the word,
I will be with thee,
saith the Lord.
Change is our portion here;
Yet midst our changing lot,
Midst withering flowers and tempests drear,
There is that changes not.
Unchangeable Jehovah’s word,
I will be with thee,
saith the Lord.
Changeless, the way of peace:
Changeless, Emmanuel’s name;
Changeless, the covenant of grace;
Eternally the same.
I change not
is a Father’s word.
And I am with thee,
saith the Lord.