For we also were once thoughtless and senseless, obstinate and disobedient, deluded and misled; [we too were once] slaves to all sorts of cravings and pleasures, wasting our days in malice and jealousy and envy, hateful (hated, detestable) and hating one another.
[And] not be like Cain who [took his nature and got his motivation] from the evil one and slew his brother. And why did he slay him? Because his deeds (activities, works) were wicked and malicious and his brother's were righteous (virtuous).
Or do you suppose that the Scripture is speaking to no purpose that says, The Spirit Whom He has caused to dwell in us yearns over us and He yearns for the Spirit [to be welcome] with a jealous love? [Jer. 3:14; Hos. 2:19ff.]
But when the Jews saw the crowds, filled with envy and jealousy they contradicted what was said by Paul and talked abusively [reviling and slandering him].
Then I saw that all painful effort in labor and all skill in work comes from man's rivalry with his neighbor. This is also vanity, a vain striving after the wind and a feeding on it.