Romans 1:32
though they know God's decree that people who practise such vice deserve death, they not only do it themselves but applaud those who practise it.
Romans 12:9
Let your love be a real thing, with a loathing for evil and a bent for what is good.
1 Corinthians 15:33
Make no mistake about this: 'bad company is the ruin of good character.'
2 Corinthians 6:14-16
[Keep out of all incongruous ties with unbelievers. What have righteousness and iniquity in common, or how can light associate with darkness?
Revelation 2:4
But I have this against you: you have given up loving one another as you did at first.