Titus and 1 Peter both address household servants/slaves living under unequal power and call for conduct that prevents the gospel from being slandered and displays faithfulness under scrutiny.

Peter interprets Jesus’ unjust suffering and sin-bearing through Isaiah 53: the sinless one bears sins, his wounds bring healing, and straying sheep return.

Christ’s unjust suffering in 2:21–25 is not only redemptive but exemplary; 4:1 explicitly returns to Christ suffering in the flesh and commands believers to arm themselves with the same mind.

Christ is the Shepherd and Overseer of souls in 2:25; elders are commanded to shepherd while exercising oversight in 5:2; Christ then appears as the Chief Shepherd in 5:4.

First Peter also instructs household servants living under masters, including unjust ones, showing the early church addressing believers within coercive Roman household structures.

Galatians and 1 Peter both interpret Christ’s saving death with “tree” language and substitutionary bearing associated with Scripture.

Foreshadowing by contrast: David cries that he wishes he could have died in place of his rebellious son Absalom, but he cannot exchange his life for Absalom’s. Jesus, the greater Son of David, actually bears sins in his own body on the tree and becomes the Shepherd to whom straying sheep return.

Ezekiel portrays the LORD personally seeking, tending, and restoring scattered sheep and promises one Davidic shepherd. Peter calls the returning Christ the Shepherd and Overseer of believers’ souls, developing that shepherd-restoration trajectory.

Isaiah 53:5-6 → 1PE 2:24-25: the later passage strongly echoes or develops Isaiah’s language, pattern, or promise in a Christological context.

Isaiah 53:9 → 1PE 2:22: the later passage directly quotes Isaiah in a Christological context.