This refers back to the way the elders were to submit to the Chief Shepherd as Peter described in [1 Peter 5:1](../05/01.md) through [1 Peter 5:4](../05/04.md).
Peter speaks of the moral quality of humility as if it were clothing that people could put on. Alternate translation: "act humbly toward each other" or "act with humility" (See: [[rc://en/ta/man/translate/figs-metaphor]])