Absolutely none of us are worthy of Gods grace and mercy as we have all sinned and disappointed God in one way or another in our life, but as a child of God through the Spiritual rebirth if we do not associate with those who do not know Christ then we are no better than those we choose to disassociate with. After all it is not us that saves others, but Christ working through us speaking through his Spirit to those who need to hear of Gods salvation and if they refuse to hear then you have done all you could and shake the dust from your feet and move on to the next one.
Mark 2:15 And it came to pass, that, as Jesus sat at meat in his house, many publicans and sinners sat also together with Jesus and his disciples: for there were many, and they followed him.
Mark 2:16 And when the scribes and Pharisees saw him eat with publicans and sinners, they said unto his disciples, How is it that he eateth and drinketh with publicans and sinners?
Mark 2:17 When Jesus heard it, he saith unto them, They that are whole have no need of the physician, but they that are sick: I came not to call the righteous, but sinners to repentance.
Luke 9:5 And whosoever will not receive you, when ye go out of that city, shake off the very dust from your feet for a testimony against them.
Mark 2:15 And it came to pass, that, as Jesus sat at meat in his house, many publicans and sinners sat also together with Jesus and his disciples: for there were many, and they followed him.
Mark 2:16 And when the scribes and Pharisees saw him eat with publicans and sinners, they said unto his disciples, How is it that he eateth and drinketh with publicans and sinners?
Mark 2:17 When Jesus heard it, he saith unto them, They that are whole have no need of the physician, but they that are sick: I came not to call the righteous, but sinners to repentance.
Luke 9:5 And whosoever will not receive you, when ye go out of that city, shake off the very dust from your feet for a testimony against them.