Matthew 7:26
And every person who hears these words of mine but does not obey them will be like the foolish person who built his house on [a foundation of] sand.
Romans 2:18-24
if you know His will and have been taught by the law of Moses to [evaluate and] give approval to what is best;
Philippians 3:18-19
For I have often told you before, and am telling you again with tears in my eyes, that many people are living as the enemies of the cross of Christ [i.e., their lives oppose the purpose of Christ's death].
2 Timothy 3:5
[These people] maintain an appearance of being godly, but they have denied its power; [you should] turn away from such people.
Titus 1:16
These people claim to know God [as Savior], but they deny Him by their actions, so they are detestable and disobedient and unfit for doing anything good.