en_tn/2ch/14/05.md

he took away the high places ... He built fortified cities

Since Asa was king, he may have told his officials to do these things. Alternate translation: "he had his people take away the high places ... He had his workers build fortified cities" (See: rc://en/ta/man/translate/figs-metonymy)

The kingdom had rest under him

There being no war is spoken of as if the kingdom had rest. Alternate translation: "The kingdom had peace under him" (See: rc://en/ta/man/translate/figs-metaphor)

under him

"under his reign." A king ruling a kingdom is spoken of as if the king is over the kingdom or the kingdom is under the king. Alternate translation: "during his reign" or "while he was king" (See: rc://en/ta/man/translate/figs-metaphor)