Forgive, I pray thee, my sin only this once - What a strange case! And what a series of softening and hardening, of sinning and repenting! Had he not now another opportunity of returning to God? But the love of gain, and the gratification of his own self-will and obstinacy, finally prevailed.

went

Exodus 8:30 And Moses went out from Pharaoh, and entreated the LORD.

and intreated

Exodus 8:9,28,29 And Moses said to Pharaoh, Glory over me: when shall I entreat for you, and for your servants, and for your people...

Matthew 5:44 But I say to you, Love your enemies, bless them that curse you, do good to them that hate you...

Luke 6:28 Bless them that curse you, and pray for them which spitefully use you.

Exposition of Chap. Iii. (ii. 28-32. )
Ver. 1. "And it shall come to pass, afterwards, I will pour out My Spirit upon all flesh; and your sons and your daughters shall prophesy; your old men shall dream dreams, and your young men shall see visions." The communication of the Spirit of God was the constant prerogative of the Covenant-people. Indeed, the very idea of such a people necessarily requires it. For the Spirit of God is the only inward bond betwixt Him and that which is created; a Covenant-people, therefore, without such an inward …
Ernst Wilhelm Hengstenberg—Christology of the Old Testament