John Newton’s 1779 hymn is sung the world over. I believe some congregations sing it every Sunday. My congregation sings it after every communion, which we celebrate on the first Sunday of each month. Despite all of that singing, it’s still a good hymn for the new year.

The Hartford Selection of Hymns (1799) offers these three verses as 4-6, which may be where the most of the variations come in (they are not in the video above either).

The Lord has promis’d good to me,
His word my hope secures;
He will my shield and portion be,
As long as life endures.

Yes, when this flesh and heart shall fail,
And mortal life shall cease;
I shall possess within the vzil,
A life of joy and peace.

The earth shall soon dissolve like snow,
The sun forbear to shine;
But God, who call’d me here below,
Will be forever mine.