Matthew 10:16-23 Coming Persecutions, where Jesus before being persecuted warns his disciples that there is evil in the world and that they must be aware of it, all while being pure at heart:
Behold, I send you out as sheep in the midst of wolves; so be wise as serpents and innocent as doves.
Proverbs 27:17.
New International Version:
As iron sharpens iron, so one person sharpens another.
Gospel of Matthew 4 King James Version:
18 And Jesus, walking by the sea of Galilee, saw two brethren, Simon called Peter, and andrew the Apostle his brother, casting a net into the sea: for they were fishers.
19 And he saith unto them, Follow me, and I will make you fishers of men.
Gospel of Matthew 4:4:
Man shall not live by bread alone, but by every word that proceeds out of the mouth of God
Ciro Santilli's mother loves that one. Even though she was constantly worried that if Ciro had studied physics he would be poor and starve, a factor which led him to study engineering instead, one of the greatest mistakes of his life. don't be a pussy.
Gospel of Matthew 7:13:
Enter through the narrow gate. For wide is the gate and broad is the road that leads to destruction, and many enter through it.
Ciro Santilli really likes this one, because he feels that where many people go, it is useless to go again. It is much better to explore that which few can do, but which many will need.
Water Margin also comes to mind. And also A story of floating weeds.
Also known as being hipster.