Why does the Supreme Personality of Godhead permit sinful activities? The Supreme Lord does not want any living being to act sinfully, and He begs him through his good conscience to refrain from sin. But when someone insists upon acting sinfully, the Supreme Lord gives him the sanction to act at his own risk (mattaù småtir jïänam apohanaà ca [Bg. 15.15]). No one can do anything without the sanction of the Lord, but He is so kind that when the conditioned soul persists in doing something, the Lord permits the individual soul to act at his own risk.

SB 5.18.3