"Since all souls belong to God (Ezek 18:4), does he not have a right to do with them as he pleases,?"
Yes. But it does not please Him to show favoritism/partiality.
Romans 2:11 ESV / 1,659 helpful votes
For God shows no partiality.
James 2:1 ESV / 1,562 helpful votes
My brothers, show no partiality as you hold the faith in our Lord Jesus Christ, the Lord of glory.
Acts 10:34 ESV / 1,307 helpful votes
So Peter opened his mouth and said: “Truly I understand that God shows no partiality,
Galatians 3:28 ESV / 1,268 helpful votes
There is neither Jew nor Greek, there is neither slave nor free, there is no male and female, for you are all one in Christ Jesus.
Leviticus 19:15 ESV / 1,238 helpful votes
“You shall do no injustice in court. You shall not be partial to the poor or defer to the great, but in righteousness shall you judge your neighbor.
James 2:4 ESV / 1,177 helpful votes
Have you not then made distinctions among yourselves and become judges with evil thoughts?
1 Timothy 5:21 ESV / 1,162 helpful votes
In the presence of God and of Christ Jesus and of the elect angels I charge you to keep these rules without prejudging, doing nothing from partiality.
Acts 10:34-35 ESV / 1,093 helpful votes
So Peter opened his mouth and said: “Truly I understand that God shows no partiality, but in every nation anyone who fears him and does what is right is acceptable to him.
Proverbs 28:21 ESV / 1,022 helpful votes
To show partiality is not good, but for a piece of bread a man will do wrong.
Deuteronomy 10:17 ESV / 1,007 helpful votes
For the Lord your God is God of gods and Lord of lords, the great, the mighty, and the awesome God, who is not partial and takes no bribe.
James 2:1-4 ESV / 914 helpful votes
My brothers, show no partiality as you hold the faith in our Lord Jesus Christ, the Lord of glory. For if a man wearing a gold ring and fine clothing comes into your assembly, and a poor man in shabby clothing also comes in, and if you pay attention to the one who wears the fine clothing and say, “You sit here in a good place,” while you say to the poor man, “You stand over there,” or, “Sit down at my feet,” have you not then made distinctions among yourselves and become judges with evil thoughts?
Acts 10:35 ESV / 882 helpful votes
But in every nation anyone who fears him and does what is right is acceptable to him.
Romans 1:16 ESV / 878 helpful votes
For I am not ashamed of the gospel, for it is the power of God for salvation to everyone who believes, to the Jew first and also to the Greek.
James 2:9 ESV / 861 helpful votes
But if you show partiality, you are committing sin and are convicted by the law as transgressors.
Jude 1:16 ESV / 852 helpful votes
These are grumblers, malcontents, following their own sinful desires; they are loud-mouthed boasters, showing favoritism to gain advantage.
James 3:17 ESV / 849 helpful votes
But the wisdom from above is first pure, then peaceable, gentle, open to reason, full of mercy and good fruits, impartial and sincere.
"Or are you jealous of his magnificent generosity with many (Mat 20:15)?
No. But His generosity is not partial. His generously and genuinely offers reconciliation to all, not a select few.
"Or does not the Potter have the right to make from one lump of clay some pots for noble purposes and others for common use (Rom 9:21)?"
Yes. He designates each pot for use impartially, according to the same criteria for all.