The poem
When I a verse shall make, Know I have pray'd thee, For old religion's sake, Saint Ben to aid me.
Make the way smooth for me, When I, thy Herrick, Honouring thee, on my knee Offer my lyric.
Candles I'll give to thee, And a new altar, And thou, Saint Ben, shalt be Writ in my psalter.

what are the real functions of tone in the poems?