Shared ground
Psalm 16:10–11 presents confident trust that God’s care reaches beyond the threat of death. Explicitly, the speaker says God will not abandon his self (“my soul”) to Sheol and will not let God’s devoted one see corruption. The movement is from danger (death and decay) to God-given life, described as a “path” God shows.
The passage also ties “life” to relationship with God: “fullness of joy” is located “in your presence,” and lasting good is pictured at God’s “right hand.” These are court-and-temple images for nearness, favor, and secure access to God.
Where interpretation differs
Some readers take the words as the speaker’s confidence of rescue from a deadly threat in this life—God will not let him die (or at least will not let death be his end). Others think the language reaches beyond ordinary deliverance and points to God’s victory over death itself, including life after death.
A second difference concerns “your holy one” (God’s devoted one). Some read it as the same individual speaking in the psalm. Others think it can be read as a representative figure whose experience speaks for the faithful, and later readers may hear it as pointing beyond the original speaker.
Why the disagreement exists
The key terms are both strong and somewhat open-ended. “Sheol” can mean the realm/state of the dead without spelling out what comes next. “See corruption” can be heard as (a) not dying, (b) not remaining under death’s power, or (c) not undergoing decay after death. Likewise, “forevermore” can function as poetic emphasis for unending security with God, or as a more literal claim about enduring life beyond death.
What this passage clearly contributes
From the text itself, the core claim is that God’s loyal care is stronger than death’s claim on the speaker (not abandonment to Sheol; not left to corruption). It also clarifies what “life” means in this psalm: God personally guides it (“you will show me”), and its defining feature is joy rooted in God’s presence, with enduring “pleasures” pictured at God’s right hand. The passage therefore supplies vocabulary for confidence beyond the grave while also grounding that confidence in communion with God rather than in circumstances alone.