Mark 3:28-35

28“I assure you and most solemnly say to you, all sins will be forgiven the sons of men, and all the abusive and blasphemous things they say;

29but whoever blasphemes against the Holy Spirit and His power [by attributing the miracles done by Me to Satan] never has forgiveness, but is guilty of an everlasting sin [a sin which is unforgivable in this present age as well as in the age to come]”—

30[Jesus said this] because the scribes and Pharisees were [attributing His miracles to Satan by] saying, “He has an unclean spirit.”

31Then His mother and His brothers arrived, and standing outside they sent word to Him and called for Him.

32A crowd was sitting around Him, and they said to Him, “Look! Your mother and Your brothers are outside asking for You.”

33And He replied, “Who are My mother and My brothers?”

34Looking at those who were sitting in a circle around Him, He said, “Here are My mother and My brothers!

35For whoever does the will of God [by believing in Me, and following Me], he is My brother and sister and mother.”