James 4:8
Come close to God and He will come close to you. Wash your hands, you sinful people [i.e., this is an exhortation to repent of moral and spiritual corruption], and purify your hearts, you double-minded people.
Matthew 12:33
Either be a healthy tree and produce wholesome fruit, or be a diseased tree and produce rotten fruit, for [the quality of] a tree will be recognized by [the quality of] its fruit.
Matthew 15:19-20
For evil thoughts, murder, extramarital affairs, sexual immorality, stealing, perjury, slander --- [all these] come from a person's heart,
Matthew 23:26-27
You blind Pharisees! First wash the inside of the cup and dish, so [then] the outside will be clean also.
Luke 11:39
And the Lord said to him, "Now you Pharisees [meticulously] clean the outside of the cup and the dish [i.e., this was an allusion to their lives], but you are filled with greed for wealth and [other] evils on the inside.
Acts 8:22
So, repent [i.e., change your heart and life] of such a terrible thing and pray for the Lord to forgive you for even thinking of such a thing. Perhaps He will [if you are really sincere].
Romans 1:21
Now they knew who God was, but they did not honor Him as God or thank Him [for their blessings]. Instead they engaged in their useless speculations and their foolish minds were filled with [spiritual] darkness.
1 Corinthians 3:20
And again, it says [Psa. 94:11], "The Lord knows that the thoughts of 'wise people' are worthless."