Ellen G. White said this quote

Let no one take the limited, narrow position that any of the works of man can help in the least possible way to liquidate the debt of his transgression. This is a fatal deception. If you would understand it, you must cease haggling over your pet ideas, and with humble hears survey the atonement. This matter is so dimly comprehended that thousands upon thousands claiming to be sons of God are children of the wicked one, because they will depend on their own works. God always demanded good works, the law demands it, but because man placed himself in sin where his good works were valueless, Jesus' righteousness alone can avail. Christ is able to save to the uttermost because He ever liveth to make intercession for us. All man can possibly do toward his own salvation is to accept the invitation, Whosoever will, let him take of the water of life freely.