Exodus 9:27

²⁷ And Pharaoh sendeth, and calleth for Moses and for Aaron, and saith unto them, `I have sinned this time, Jehovah [is] the Righteous, and I and my people [are] the Wicked,

Grieve at heart, to

'To grieve at heart' is in reference to love, and 'to repent,' to wisdom, as in Genesis 6:6.