This is an old one my Grandma loves... I personally love the old Hymns as well, but the new ones aren't bad either. At our church we mix it up b/c we have a good mixture in age of our members.
"Standing on the Promises of God"
...and on that day when my strength is failing, the end draws near and my times has come, still my soul will sing Your praise unending, ten thousand years and then forevermore!