Isaiah: Oft hast Thou, Lord, in tender lo e

Oft hast Thou, Lord, in tender lo e.
Prevented my request,
And sent Thy Spirit from above
An unexpected Guest:
Oft when my prayer was scarce begun
Thou didst Thy grace impart,
And make Thy pardoning mercy known,
And seal it on my heart.

Why this profusion of Thy grace
On such a worm as me?
Father, I ask in fix'd amaze.
Explain the mystery.
How canst Thou to a sinner's cry
Incline Thy pitying ear?
Thou hear'st mine Advocate on high,
And wilt for ever hear.