Sentence:  But, remember— / For that's my business to you,—that you three / From Milan did supplant good Prospero; / Expos'd unto the sea, which hath <WSD>requit</WSD> it, / Him, and his innocent child: for which foul deed / The powers, delaying, not forgetting, have / Incens'd the seas and shores, yea, all the creatures, / Against your peace. 
Meaning of the word marked with <WSD> tags:  To return something (usually something figurative) that has been given; to repay; to recompense