This second question sharpens the first. Luke 16:11 contrasted unrighteous mammon with true riches. Now Jesus contrasts what belongs to "another man" with what will be "your own." Barnes says "another man's" refers to God: "The wealth of the world is his." Matthew Henry says the same: the riches of this world "are another man's," and "they are God's; his title to them is prior and superior to ours." Gill reports how interpreters generally read the verse: "if he is unfaithful in the former, how should he expect the latter to be given to him?" His own first explanation is that one who misuses another man's goods can expect others to withhold what is his. Like the steward in the parable, the disciples handle goods that belong to Someone else.

The answer is clear without a reply: no one would give such a person something of his own. Jesus moves straight to His conclusion: "No servant can serve two masters... Ye cannot serve God and mammon" (Luke 16:13). The covetous Pharisees "derided him" (Luke 16:14), and Jesus told them that "God knoweth your hearts" (Luke 16:15).

In the parable, the steward managed goods that were his master's, not his own (Luke 16:1, 5). Jesus uses that same picture here. Barnes explains "your own" as "The riches of heaven," which will not be taken away. Matthew Henry says spiritual and eternal riches are ours "inseparably; they are a good part that will never be taken away."

This question turns ownership upside down. What people usually call "mine" (money, land, goods) is really "another man's," because it belongs to God. What feels distant and unseen, the riches of heaven, is what God intends to make truly "your own."

That reveals something about God's generosity. He is not only a Master who entrusts goods for a time. He is a Giver who plans to give His people something that is theirs to keep. Earlier in Luke, in Jesus' parable of the rich fool, God asks, "then whose shall those things be, which thou hast provided?" (Luke 12:20). Earthly goods pass to others; God's gifts remain.