2nd Timothy 2:25 In meekness instructing those that oppose themselves; if God peradventure will give them repentance to the acknowledging of the truth; 26 And that they may recover themselves out of the snare of the devil, who are taken captive by him at his will.
In other words, satan has much stronger will-power than any member of the human family, and thus, he could, and will speak directly through any individual spontaneously, who is not kept by the power of God through faith in Christ. We like to think of ourselves as large and in charge, but the Bible teaches us that folks would inevitably serve one of two masters, either Christ or satan. It is not what you will hear in the secular realm, nor is it a cute doctrine, but it is the truth.
Ephesians 6: 10 Finally, my brethren, be strong in the Lord, and in the power of his might. 11 Put on the whole armor of God, that you may be able to stand against the wiles of the devil. 12 For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.
Revelation 16: 13 And I saw three unclean spirits like frogs come out of the mouth of the dragon, and out of the mouth of the beast, and out of the mouth of the false prophet. 14 For they are the spirits of devils, working miracles, which go forth unto the kings of the earth and of the whole world, to gather them to the battle of that great day of God Almighty.
Ephesians 6:13 Wherefore take unto you the whole armor of God, that you may be able to withstand in the evil day, and having done all, to stand.
May The Lord add His blessing to the study of His word. God bless!