Satan
Luke 10:18-19
And He said to them, "I saw Satan fall like lightning from heaven. 19 Behold, I give you the authority to trample on
serpents and scorpions, and over all the power of the enemy, and nothing shall by any means hurt you.
NKJV
2 Cor 2:10-11
If you forgive anyone, I also forgive him. And what I have forgiven-if there was
anything to forgive-I have forgiven in the sight of Christ for your sake, 11 in
order that Satan might not outwit us. For we are not unaware of his schemes.
(NIV)
2 Cor 11:13-15
For such are false apostles, deceitful workers, transforming themselves into
apostles of Christ. 14 And no wonder! For Satan himself transforms himself into
an angel of light. 15 Therefore it is no great thing if his ministers also
transform themselves into ministers of righteousness, whose end will be
according to their works.
NKJV
Eph 6:11-13
Put on the full armor of God so that you can take your stand against the devil's schemes. 12 For our struggle is
not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against
the spiritual forces of evil in the heavenly realms. 13 Therefore put on the full armor of God, so that when the day of evil comes,
you may be able to stand your ground, and after you have done everything, to stand.
NIV
1 Tim 4:1
Now the Spirit expressly says that in latter times some will depart from the faith, giving heed to deceiving spirits
and doctrines of demons
NKJV
Isa 14:12-15
How you are fallen from heaven,
O Lucifer, son of the morning!
How you are cut down to the ground,
You who weakened the nations!
13 For you have said in your heart:
'I will ascend into heaven,
I will exalt my throne above the stars of God;
I will also sit on the mount of the congregation
On the farthest sides of the north;
14 I will ascend above the heights of the clouds,
I will be like the Most High.'
15 Yet you shall be brought down to Sheol,
To the lowest depths of the Pit.
NKJV