That remains (4050)(perisseia from perissós = over and above) is a noun which means abundance/superabundance, overabundance, excess, superfluity, overflow, surplus. Perisseia is that which is over and above, something that is beyond the ordinary or that which is an exceeding measure or greater than expected amount. In Ecclesiastes (see examples below), perisseia conveys the sense of gain or profit. Perisseia gives a vivid picture of wickedness which is abounding or abundant. In context James speaks of the vast quantity or abundance of evil that must be removed. Perisseia is used in striking contrast in the NT with two of the uses describing an abundance of grace and an abundance of joy and here in James an abundance of wickedness. Here are the 4 uses of perisseia in the NT - Romans 5:17 (note) For if by the transgression of the one, death reigned through the one, much more those who receive the abundance of grace and of the gift of righteousness will reign in life through the One, Jesus Christ. 2 Corinthians 8:2 that in a great ordeal of affliction their abundance of joy and their deep poverty overflowed in the wealth of their liberality (or generosity = haplotes - an openness and sincerity in sharing with others). 2 Corinthians 10:15 not boasting beyond our measure, that is, in other men's labors, but with the hope that as your faith grows, we shall be, within our sphere, enlarged even more by you, James 1:21 Therefore putting aside all filthiness and all that remains of wickedness, in humility receive the word implanted, which is able to save your souls. There are 11 uses of perisseia in the Septuagint (LXX), all in Ecclesiastes - Eccl. 1:3; 2:11, 13; 3:9; 5:9, 16; 6:8; 7:11, 12; 10:10, 11 Ecclesiastes 1:3 What advantage (Heb = yithron = advantage, profit; Lxx = perisseia) does man have in all his work Which he does under the sun? Ecclesiastes 2:13 And I saw that wisdom excels (Heb = yithron = advantage, profit; Lxx = perisseia) folly as light excels darkness. Poole has an interesting perspective writing that the wickedness... is said to be superfluous or redundant, which is more than should be in a thing; in which respect all sin is superfluous in the soul, as being that which should not be in it: and so this intimates that we are not only to lay apart more gross pollutions, but all the lusts of the flesh, and relics of old Adam, as being all superfluities which may well be spared, or excrements, (as some render the word, agreeably to the former metaphor), which should be cast away.