This is a great question. It is first important to know where these words come from. They are taken from the Old Testament/Hebrew Bible - Jeremiah 29:11.
The context of the book of Jeremiah is very important. The Israelites are in exile. This is a highly significant fact, because the Promised Land in the Old Testament/Hebrew Bible is the final destination of the people of God. They inherited it through God's promises under the leadership of Joshua. However, in Jeremiah they are no longer in the Promised Land. Moreover, in the immediate context, God tells the people that they will be in exile for 70 years!
Therefore, these words are another promise of God's faithfulness. He basically shows them that the exile will not be forever. Exile will last for 70 years and no more. God will one day bring his people back into the land.
In light of this, we can say that More, the protagonist will come out on top in the end, because he is faithful to his conscience apart from what other people think. As he is faithful, God will be as well. Death, in this sense, does not have final sway.