17 For the scripture says to Pharaoh: ” I have raised you up for this exact purpose, that I may demonstrate my power in you, and that my name may be proclaimed in all the earth.” 18 So then, God has mercy on whom he chooses to have mercy, and he hardens whom he chooses to harden. 19 You might say to me then, “Why does he still find fault, because who has ever resisted his will?” 20 But who indeed are you–a mere human being–to talk back to God? Does what is carved say to the carver, “Why have you made me like this?” 21 Has the potter no right to make from the same lump of clay one vessel for special use and another for ordinary use? 22 Imagine God, wanting to demonstrate his wrath and to make known his power, enduring with much patience the objects of wrath prepared for destruction? 23 And imagine him wanting to make known the wealth of his glory upon the objects of mercy that he has prepared beforehand for glory– 24 even us, whom he has called, not only from the Jews but also from the Gentiles?
enduring with much patience
Paul’s reference to Pharaoh and the creations talking back to their creator illustrate the question of reprobation. God’s attitude toward the reprobate is this: he endures them with much patience. They have chosen to live without him, and he has allowed them to do so (for a time). His purpose for doing this is to make known the wealth of his glory upon the objects of his mercy. So, God is manifesting his love to both the saved and the lost. The saved feel his love by being rescued. The lost feel his live by being allowed to live – for a time – even if that life is in rebellion against their creator.
LORD, thank you for loving the world, and saving some of us from it by your mercy.
 Exodus 9:16.