One of the hymns in a church service I attended last month was "My Hope Is Built on Nothing Less" (paired with the tune "Magdalen"). I noticed a small feature in the last line of the third verse: "He then is all my hope and stay," sung to this musical phrase:
"All" is sung to a dotted quarter note. This is the longest note in the phrase, and to some degree, this greater duration lends a sense of the entirety of that "all."