No contradiction. I can say that sentence all I want according to how I define redemption, which is the correct definition, IMO.
You and others have their own definitions, which are correct according to your definitions.
But ultimately, there is only one correct definition, only one correct understanding of how a person is redeemed and who does the redeeming. Ultimately, either a person can be redeemed by willfully taking another person's life, or he can't. It's fairly basic black-and-white stuff here.
God is not inscrutable on these things, try as some might to confuse the issue.
No need to emphasize your point was in your opinion, it's a given we're both talking opinions.