Acts 8:11

and they were giving heed to him, because of his having for a long time amazed them with deeds of magic.

Acts 8:9

And a certain man, by name Simon, was before in the city using magic, and amazing the nation of Samaria, saying himself to be a certain great one,

Galatians 3:1

O thoughtless Galatians, who did bewitch you, not to obey the truth -- before whose eyes Jesus Christ was described before among you crucified?

Isaiah 8:19

And when they say unto you, 'Seek unto those having familiar spirits, And unto wizards, who chatter and mutter, Doth not a people seek unto its God? -- For the living unto the dead!

Isaiah 44:25

Making void the tokens of devisers, And diviners it maketh mad, Turning the wise backward, And their knowledge it maketh foolish.

Isaiah 47:9-13

And come in to thee do these two things, In a moment, in one day, childlessness and widowhood, According to their perfection they have come upon thee, In the multitude of thy sorceries, In the exceeding might of thy charms.

Treasury of Scripture Knowledge

Summary

And to him they had regard, because that of long time he had bewitched them with sorceries.

Bible References

He had

Isaiah 8:19
And when they say unto you, 'Seek unto those having familiar spirits, And unto wizards, who chatter and mutter, Doth not a people seek unto its God? -- For the living unto the dead!
Isaiah 44:25
Making void the tokens of devisers, And diviners it maketh mad, Turning the wise backward, And their knowledge it maketh foolish.
Isaiah 47:9
And come in to thee do these two things, In a moment, in one day, childlessness and widowhood, According to their perfection they have come upon thee, In the multitude of thy sorceries, In the exceeding might of thy charms.
Galatians 3:1
O thoughtless Galatians, who did bewitch you, not to obey the truth -- before whose eyes Jesus Christ was described before among you crucified?

General references

Exodus 22:18
'A witch thou dost not keep alive.
Leviticus 19:31
Ye do not turn unto those having familiar spirits; and unto wizards ye do not seek, for uncleanness by them; I am Jehovah your God.
Acts 8:19
saying, 'Give also to me this authority, that on whomsoever I may lay the hands, he may receive the Holy Spirit.'