There is no one-word anagram. The letters can spell the name Lee Brice (country singer).
Otherwise the longest words are belie, eerie, rebel and relic.
*With a D instead of one E, the anagram is credible.
Those letters spell natural.
The letters in "these letters" can spell the phrase "ether settles." The letters can spell shorter words such as trestles, sheerest, shelters, and treeless.
Those letters will spell strum.
Those letters will spell exciting.
Those letters will spell stigma.
Those letters spell arrest.
Those letters spell exchange.
Those letters spell vulnerable.
Those letters spell illness.
Those letters spell holiday.
Those letters spell opposite.
Those letters spell campaign.