How have we despised your name?

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Malachi 1
7 By offering polluted food upon my altar. But you say, 'How have we polluted you?' By saying that the LORD's table may be despised.
8 When you offer blind animals in sacrifice, is that not evil? And when you offer those that are lame or sick, is that not evil? Present that to your governor; will he accept you or show you favor? says the LORD of hosts.
9 And now entreat the favor of God, that he may be gracious to us. With such a gift from your hand, will he show favor to any of you? says the LORD of hosts.
10 Oh that there were one among you who would shut the doors, that you might not kindle fire on my altar in vain! I have no pleasure in you, says the LORD of hosts, and I will not accept an offering from your hand.
Matthew 12
30 Whoever is not with me is against me, and whoever does not gather with me scatters.
31 Therefore I tell you, every sin and blasphemy will be forgiven people, but the blasphemy against the Spirit will not be forgiven.
32 And whoever speaks a word against the Son of Man will be forgiven, but whoever speaks against the Holy Spirit will not be forgiven, either in this age or in the age to come.

And if I am a master, where is my fear?