Salvation is a "gift" by grace through faith apart from any and all works.... to add in "turn from sin" as a requirement makes it a bilateral transaction ....quid pro quo..... it is not.
We do not make a promise to turn from sin in order to receive the gift of salvation...moreover Jesus is Lord we do not make Him Lord.
So you believe killer don't need to repent to be save?
You have problem with understanding the requirement of salvation
Luke 10
25 And, behold, a certain lawyer stood up, and tempted him, saying, Master, what shall I do to inherit eternal life?
26 He said unto him, What is written in the law? how readest thou?
27 And he answering said, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy strength, and with all thy mind; and thy neighbour as thyself.
28 And he said unto him, Thou hast answered right: this do, and thou shalt live.
Lawyer ask what shall I do to inherit eternal life
= what requirement to inherit eternal life
Jesus agree with
Requirement of salvation is
Love God and Love fellow man
Mean if you not love God and fellow men you not save
Mean if you kill fellow man and not repent you not save.
How another verse say by faith
Because if you have faith you love God, you can't have faith and hate god
And if you love God you love your fellow man.
Because bible say if a man say love God and hate his brother, he is liar.