Exodus 10:3

“And Moses and Aaron came in unto Pharaoh, etc.] As the Lord commanded them, for what is before said to Moses was designed for Aaron also, his prophet and spokesman: and said unto him, thus saith the Lord God of the Hebrews; as the ambassadors of the God of Israel, and in his name said: how long wilt thou refuse to humble thyself before me? to acknowledge his offence, lie low before God, and be subject to his will; he had humbled himself for a moment, but then this did not continue; what God expected of him, and complains of the want of, was such a continued humiliation before him, and such a subjection to him, as would issue in complying with what he had so often demanded of him, and is as…”

“Thus saith the Lord God of the Hebrews, How long wilt thou refuse to humble thyself before me? - It is justly expected from the greatest of men, that they humble themselves before the great God, and it is at their peril if they refuse to do it. Those that will not humble themselves, God will humble. Exodus 10:10”

“How long: Exo 9:17, Exo 16:28; Num 14:27; Kg1 18:21; Pro 1:22, Pro 1:24; Jer 13:10; Eze 5:6; Heb 12:25 humble: Kg1 21:29; Ch2 7:14, Ch2 33:12, Ch2 33:19, Ch2 34:27; Job 42:6; Pro 18:12; Isa 1:5; Isa 2:11; Jer 13:18; Rom 2:4; Jam 4:10; Pe1 5:6 Exodus 10:4”

“As Pharaoh had acknowledged, when the previous plague was sent, that Jehovah was righteous ( Exo 9:27), his crime was placed still more strongly before him: "How long wilt thou refuse to humble thyself before Me?" (לענת for להענת, as in Exo 34:24). Exodus 10:4”