John 8:7

However, when they persisted in the questioning Him, He straightened up and said, “He who is without (any) sin among you, let him be the first to throw a stone at her.”

Jesus keeps it real! We all have sinned and come up short without salvation through Jesus Christ.  We still may slip up from time to time, but when we repent, the blood of the Lamb covers our sin.  Every one of us has to work out our salvation with Jesus.  Yes, we are to recognize sin and not condone it but pray for them to repent and return to God.