Based on the given tweet, determine the level of sadness the author is experiencing. Choose from the following options: 0: no sadness can be inferred, 1: low amount of sadness can be inferred, 2: moderate amount of sadness can be inferred, 3: high amount of sadness can be inferred.
Tweet: Isaiah 40:31\nthose who trust in the Lord will find new strength.\nThey will soar high on wings like eagles.\nThey will run and not grow weary.
0: no sadness can be inferred