1 John 3:12-15
not [hate each other] the way Cain did, who belonged to the evil one [i.e., Satan], when he murdered his brother [Abel]. And why did he murder him? It was because his [own] actions were evil and his brother's were righteous [See Heb. 11:4].
Ephesians 4:26-27
[Psa. 4:4 says], "Be angry [i.e., at wrongdoing. See Mark 3:5], but do not sin" [i.e., by harboring bitterness or retaliation]. Do not allow the sun to go down while you are still provoked.
Titus 1:15-16
Everything is pure [i.e., ceremonially acceptable] to the person who is pure [i.e., who has been cleansed by the blood of Christ], but to those who are [spiritually] corrupt, and do not believe [in Christ], nothing is pure, but both their minds and consciences are corrupted. [Note: This statement was intended to remove the physical restrictions imposed by the law of Moses].
Titus 3:3
For we [Christians] were also once foolish, disobedient, deceived, enslaved to various kinds of [evil] desires and [sinful] pleasures. [We used to] live in malice and envy, hating people and being hated by them.