Note how the last line of each verse becomes the first line of the next. In programming, we would call this a doubly linked list. I suppose Donne would have called it a chain.
Salvation to all that will is nigh.
That All, which alwayes is All every where,
Which cannot sinne, and yet all sinnes must beare,
Which cannot die, yet cannot chuse but die,
Loe, faithfull Virgin, yeelds himselfe to lye
In prison, in thy wombe; and though he there
Can take no sinne, nor thou give, yet he'will weare
Taken from thence, flesh, which deaths force may trie.
Ere by the spheares time was created, thou
Wast in his minde, who is thy Sonne, and Brother,
Whom thou conceiv'st, conceiv'd; yea thou art now
Thy Makers maker, and thy Fathers mother,
Thou'hast light in darke; and shutst in little roome
Immensity cloysterd in thy deare wombe.