C. H. Spurgeon is writing this to Psalm 119:53 in his book “Morning and Evening” (Daily Readings):

Psalm 119:53

“Indignation grips me because of the wicked, who have forsaken your law.”

“Sin in others horrifies us because it reminds us of the basement of our own hearts: when we see a transgressor, we cry with the saint mentioned by Bernard, ‘He fell today, and I could fall tomorrow.’ “