'Donne' variation three

Third in a series of five freely improvised variations on the tune "Donne" by John Hilton (1599-1657) generally paired with the poem "A Hymn to God the Father" by John Donne (1573-1631)

Wilt thou forgive that sin where I begun,
Which was my sin, though it were done before?
Wilt thou forgive that sin, through which I run,
And do run still, though still I do deplore?
When thou hast done, thou hast not done,
For I have more.

Wilt thou forgive that sin which I have won
Others to sin, and made my sin their door?
Wilt thou forgive that sin which I did shun
A year or two, but wallow'd in, a score?
When thou hast done, thou hast not done,
For I have more.

I have a sin of fear, that when I have spun
My last thread, I shall perish on the shore;
But swear by thyself, that at my death thy Son
Shall shine as he shines now, and heretofore;
And, having done that, thou hast done;
I fear no more.