"Repent of sins to be saved" hereticks add "of your sins" into repentance, push works salvation and damnable heresy, get their false, unbiblical teaching from false cults, pretend to believe the Bible on repentance and salvation when they do not believe the Bible, decieve both unbelievers and newly saved believers, insert/add works to the Gospel, twist Jesus and Paul's words on repentance/repent, confuses Bible believers on what repentance biblically means, subtily attacks Jesus' blood atonement for our sins on the cross, promotes self-righteousness, and hinders soulwinning due to promoting another unbiblical gospel / another vain unbiblical way of salvation

Exanples of repent of sins heresies include changing one's life, turning from sins, trusting self efforts & more works salvationist nonsense

In sum, repent of sins is another works based salvationism of trusting both yourself & your vain work of attempting to turn from sins to be saved

See Jonah 3:10 again if you do not understand

Repentance Examined