"The owner's servants came to him and said, 'Sir, didn't you sow good seed in your field? Where then did the weeds come from?'
" 'An enemy did this,' he replied. "The servants asked him, 'Do you want us to go and pull them up?'
" 'No,' he answered, 'because while you are pulling the weeds, you may root up the wheat with them.
Let both grow together until the harvest. At that time I will tell the harvesters: First collect the weeds and tie them in bundles to be burned; then gather the wheat and bring it into my barn.' "1
References for Matthew 13:30