Matthew 12:31

Overview - Matthew 12
Christ reproves the blindness of the Pharisees concerning the breach of the sabbath,
by scripture,
by reason,
13 and by a miracle.
22 He heals a man possessed that was blind and dumb;
24 and confuting the absurd charge of casting out devils by Beelzebub, he shows that blasphemy against the Holy Ghost shall never be forgiven.
36 Account shall be made of idle words.
38 He rebukes the unfaithful, who seek after a sign,
46 and shows who is his brother, sister, and mother.
Treasury of Scripture Knowledge

Matthew 12:31  (King James Version)
Wherefore I say unto you, All manner of sin and blasphemy shall be forgiven unto men: but the blasphemy against the Holy Ghost shall not be forgiven unto men.

Isaiah 1:18 ; 55:7 Ezekiel 33:11 ; 1 Timothy 1:13-15 ; Hebrews 6:4 ; *etc:
Hebrews 10:26 Hebrews 10:29 ; 1 John 1:9 ; 1 John 2:1 1 John 2:2

Blasphemy, [blasphemia ,] either from [blapto ten phemen,] to hurt, or
blast the reputation, or from [ballo tais phemais,] to smite with words, or reports, when applied to men denotes injurious speaking, or calumny, and when used in reference to God signifies speaking impiously of his nature, attributes, and works.* but.
Mr 3:28-30 Lu 12:10 Ac 7:51 1Jo 5:16