From A Litany:

IV

The Trinity

O Blessed glorious Trinity,

Bones to philosophy, but milk to faith,

Which, as wise serpents, diversely

Most slipperiness, yet most entanglings hath,

As you distinguished undistinct

By power, love, knowledge be,

Give me a such self different instinct,

Of these let all me elemented be,

Of power, to love, to know, you unnumbered three.

Selections take from: John Donne: A Critical Edition of the Major Works,  edited by John Carey; Oxford: OUP, 1990