I'm not a Christian. I'm not a person who believes The Bible was written by God. I'll get that out of the way. But reading what the Bible does say about Jesus, it's clear he was not harsh over human failings,but was very firm with hypocritical religious leaders and oppressors.
This is from Matthew Chapter 9
The Calling of Matthew
9 As Jesus went on from there, he saw a man named Matthew sitting at the tax collector’s booth. “Follow me,” he told him, and Matthew got up and followed him.
10 While Jesus was having dinner at Matthew’s house, many tax collectors and sinners came and ate with him and his disciples. 11 When the Pharisees saw this, they asked his disciples, “Why does your teacher eat with tax collectors and sinners?”
12 On hearing this, Jesus said, “It is not the healthy who need a doctor, but the sick. 13 But go and learn what this means: ‘I desire mercy, not sacrifice.’[a] For I have not come to call the righteous, but sinners.”