Luke 15:31

And he said unto him, Son, thou art ever with me, and all that I have is thine.

Cross-references

Matthew 20:13-16 has a landowner who gives equally and asks 'Do you begrudge my generosity?', directly echoing the father's response to the older brother's grumbling.

Mark 7:28 Contrast

In Mark 7:28, the woman humbly accepts crumbs, contrasting the older son's resentment over having everything — showing gratitude vs entitlement.

Genesis 4:6 Parallel

In Genesis 4:6, God questions Cain's anger over Abel's acceptance — just as the older son is angry over the prodigal's welcome, both resent grace shown to another.

In Matthew 20:14, the landowner tells grumbling workers to take their pay — directly parallel to the father's answer to the older son's grumbling about generosity.