en_tn/1pe/01/10.md

salvation ... grace

These words present two ideas as if they were things or objects. In reality, "salvation" refers to the action of God saving us, or to what happens as a result. Similarly, "grace" refers to the kind way in which God deals with believers.

searched diligently and inquired carefully

The words "inquired carefully" mean basically the same thing as "searched diligently." Together these words emphasize how hard the prophets tried to understand this salvation. Alternate translation: "carefully searched to know all about this salvation" or "carefully examined everything about this salvation" (See: rc://en/ta/man/jit/figs-doublet)