You used to walk in these ways; in the life you once lived. But now you must rid yourselves of all such things as these: anger, rage, malice, slander, and filthy language from your lips. Do not lie to each other, since you have taken off your old self with its practices and have put on the new self, which is being renewed in knowledge in the image of its Creator. 
Colossians 3:7-10

We are the temple of the living God. As God has said: “I will live with them and walk among them, and I will be their God, and they will be my people.” “THEREFORE come out from them and be separate,” says the Lord.
2 Corinthians 6:16-17

“Do not even pagans do that?”
Matthew 5:47

Jesus asked, “Were not all ten cleansed? Where are the other nine? Was no one found to return and give praise to God except this foreigner?”
Luke 17:17-18

The Lord saw how great man’s wickedness on the earth had become, and that every inclination of the thoughts of his heart was only evil all the time. The Lord was grieved that he had made man on the earth, and his heart was filled with pain. So the Lord said, “I will wipe mankind, whom I have created, from the face of the earth—men and animals, and creatures that move along the ground, and birds of the air—for I am grieved that I have made them.” But Noah found favor in the eyes of the Lord. 
Genesis 6:5-8

“What comes out of a man is what makes him ‘unclean.’ For from within, out of men’s hearts, come evil thoughts, sexual immorality, theft, murder, adultery, greed, malice, deceit, lewdness, envy, slander, arrogance and folly. All these evils come from inside and make a man ‘unclean.’ ” 
Mark 7:20-23

This is the account of Noah.  Noah was a righteous man, blameless among the people of his time, and he walked with God.
Genesis 6:9 

Peter replied, “Even if all fall away on account of you, I never will.”
Matthew 26:33 

“Watch and pray so that you will not fall into temptation. The spirit is willing, but the body is weak.” 
Matthew 26:41

“Could you men not keep watch with me for one hour?”
Matthew 26:40

After a little while, those standing there went up to Peter and said, “Surely you are one of them, for your accent gives you away.” Then he began to call down curses on himself and he swore to them, “I don’t know the man!”
Matthew 26:73-74

When they arrived, they went upstairs to the room where they were staying. Those present were Peter … (and the others). They all joined together constantly in prayer, along with the women and Mary the mother of Jesus, and with his brothers.
Acts 1:13-14

Then Peter stood up with the Eleven, raised his voice and addressed the crowd
Acts 2:14,22-24