Salvation, Reclamation, Deliverance and Emancipation

Adjectives used to describe an open-ended religious promise offered to any one who repents and faithfully follows the word of spirit. A unilateral commitment from above that one can be “saved” and forgiven for any sinful acts of deviance. Does this religious safety net genuinely apply to everyone? Can we uphold and stand in this truism in any circumstance, including serial killers?