The devotee of the Lord never commits sins willingly,

sva-pada-mulam bhajatah priyasya

tyaktanya-bhavasya harih paresah

vikarma yac cotpatitam kathancid

dhunoti sarvam hrdi sannivistah

(Bhag. 11.5.42)

The devotee of the Lord never commits sins willingly, but, as above mentioned, the material world is a place where one has to commit sins, even unwillingly. The finest way to save oneself from the reactions to such accidental sins is to constantly remember the lotus feet of the Lord. But one who deliberately commits sins on the strength of the Lord’s assurance that He will save His devotee from sinful reactions commits the greatest of sins, and there is no deliverance for such a person, even by constantly remembering the lotus feet of the Lord. Such a willful offender has no chance of being freed from the clutches of fruitive action.

SB 1.19.8