In the bible Jesus tells a story
A wealth property owner hires people to work in his vineyard
Some are hired in the morning and work longer
Some are hired near the end of the day and work shorter hours
When it’s time to pay the labourers, the ones hired last are paid first while the ones hired first are paid last despite working more hours than the ones hired last
He ends his parable with the line “so the last will be first and the first will be last.”
Some translations also say “for many are called but few are chosen” or possibly “for their is no partiality with God.”
What this means is
Those who work harder are less gracious towards others because they sacrificed more - they are the last to give grace to others which is why they are the last to receive grace from God
Those who work the least hard are the most humble and the most gracious because they sacrificed the least and are therefore the most knowledgeable about their unworthiness to receive everlasting life. Because they are the most humble and the most gracious they are the first to receive the grace and forgiveness of God.
Another thing is the differences between those hired first and those hired last did not matter because those who were hired first were so poor in love and grace towards those who were less spiritually successful than them.
When they receive their grace they rest and begin a new day the next morning. Rebuilding their religion from scratch on the foundation of grace and abandoning the old foundation or reward cycle of merit by work and sacrifice.