Wrong again. It is exactly the devil and lust, and the devil beguiles all, through his subtlty, to corrupt us all from the simplicity that is in Christ.In the case of the Galatians, it seems it wasn't the devil, or lust, that was capturing them but false teaching playing on their ignorance of, or lack of confidence in, their "in Christ" spiritual position. They were not trying to be disobedient to God - quite the reverse - but in their ignorance/lack of confidence were being lured into OT Jewish law-keeping.
The false apostles appear now, deceitful workers, pretending to be ministers of Christ, and their works and words are sin and unrighteousness, in the name of Christ.
2 Corinthians 11:3 But I fear, lest by any means, as the serpent beguiled Eve through his subtilty, so your minds should be corrupted from the simplicity that is in Christ.
2 Corinthians 11:13 For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ.
14 And no marvel; for Satan himself is transformed into an angel of light.
15 Therefore it is no great thing if his ministers also be transformed as the ministers of righteousness; whose end shall be according to their works.
As pointed out, Christ showed how Israel did the works of their father the devil in lusts, ( as all do) as the spirit in man lusts to envy. That is why there are two spirits, one of God, and one of this world which is the god of this world.( 2 Corinthians 4:4.) To not be a child of the devil, is to not be children of wrath, who have their conversation in the lusts of the flesh, unless they know and acknowledge that all evil comes from the devil, as that is the father to all children of wickedness, and that is why God turns us from the power of satan to the power of God, from darkness ( lust) to light( righteousness.)
James 4:5 Do ye think that the scripture saith in vain, The spirit that dwelleth in us lusteth to envy?
1 John 4:6 We are of God: he that knoweth God heareth us; he that is not of God heareth not us. Hereby know we the spirit of truth, and the spirit of error.
Ephesians 2:3 Among whom also we all had our conversation in times past in the lusts of our flesh, fulfilling the desires of the flesh and of the mind; and were by nature the children of wrath, even as others.
Acts 26:18 To open their eyes, and to turn them from darkness to light, and from the power of Satan unto God, that they may receive forgiveness of sins, and inheritance among them which are sanctified by faith that is in me.