“Do not be deceived; bad company corrupts good morals!” (I Corinthians 15:33 NASB). Making a close friendship with a person who is morally low is a spiritually dangerous thing to do.
Allen Webster (Jacksonville, AL church of Christ) says “When we were children, it seemed our parents had an unusual interest in the cleanliness of our ears. God, our Heavenly Father, seems to share that concern. Jesus often said ‘He who has ears to hear, let him hear’ (Matthew 11:15), and he once criticized some for having stopped-up ears (Matthew 13:15).
Consider the case of Amnon, Webster continues: “Amnon was a very disturbed son of David. The beginning of (his) end started with these words: ‘But Amnon had a friend, whose name was Jonadab’ (II Samuel 13:3). Jonadab’s method of persuading Amnon is still popular today. When Amnon confided his sinful desires, but also his hesitation, Jonadab said, ‘Art thou not a king’s son?’
The person who has not firmly made up his/her mind about what is right and wrong will be easily influenced by his/her companions. Instead of letting others influence you, have such purpose in your heart and mind that you influence them for good.
If you must choose between having no friends or having one like Jonadab, choose none. A true friend leads you closer to Christ, not away from Him (Acts 18:26)