Final answer:
In Act 2, Scene 3 of 'Macbeth', the character Macbeth speaks the line to Macduff after having murdered King Duncan, feigning regret over the king's death.
Step-by-step explanation:
The lines "Good morrow both...Not yet...I'll bring you to him... Had I but died an hour before this chance, I had lived a blessed life..." are spoken by Macbeth to Macduff in Act 2, Scene 3 of Shakespeare's play 'Macbeth.' In this context, Macbeth has just discovered King Duncan's murder, which he himself has committed, though Macduff does not yet know this. Macbeth expresses a feigned regret that if only he had died before these events, his life would have been looked upon as blessed. The irony of this statement is that Macbeth himself is responsible for the tragedy he laments.