For there is no distinction: for all have sinned and fall short of the glory of God, and are justified by his grace as a gift, through the redemption that is in Christ Jesus, whom God put forward as a propitiation by his blood, to be received by faith. Romans 3:22-25
Imagine a circle that represents the character of mankind. Now imagine that if someone sins, a spot—a moral blemish of sorts—appears in the circle, marring the character of man….
If other sins occur, more blemishes appear in the circle. Well, if sins continue to multiply, eventually the entire circle will be filled with spots and blemishes. But have things reached that point? Human character is clearly tainted by sin, but the debate is about the extent of that taint. The Roman Catholic Church holds the position that man’s character is not completely tainted, but that he retains a little island of righteousness. However, the Protestant Reformers of the sixteenth century affirmed that the sinful pollution and corruption of fallen man is complete, rendering us totally corrupt.