What standard, if not the standard of the day of judgment?

"Every one of us must answer for himself. We can never be justified or made to feel secure by the practices of others. It is the greatest folly to regulate ourselves by any other standard than that by which we shall be judged." (Henry Scougal, in Robin Taylor, ed., The Life Of God In The Soul Of Man [Wheaton, Illinois: Crossway, 2022], approximate Kindle location 703)