The reckoning begins with the last so that those hired earlier may see what they receive. But a denarius in not particularly generous. Still others note that God does not distinguish between the first and last. Application Heaven is a gift of the free grace of God. Eternal life is undeserved by all who receive it.
Privilege implies responsibility.
For God shows no partiality . . . since all have sinned and fall short of the glory of God, they are justified by grace as a gift, through the redemption which is in Christ Jesus. . . . Now to one who works, his wages are not reckoned as a gift but as his due. And to one who does not work, but trusts him who justifies the ungodly, his faith is reckoned as righteousness. . . .