Matthew 12:31–32
31 iTherefore I tell you, every sin and blasphemy will be forgiven people, but jthe blasphemy against the Spirit will not be forgiven. 32 And whoever speaks a word kagainst the Son of Man lwill be forgiven, but jwhoever speaks against the Holy Spirit will not be forgiven, either in mthis age or in the age to come.
Ephesians 4:30
30 And ddo not grieve the Holy Spirit of God, eby whom you were sealed for the day of fredemption.