Kinds of Spiritual Power

Spiritual Power is of two kinds: evil, and good. This is what the fall of man is all about. Man who knew good chose to know evil too. Knowledge in the since of intimate association with these two kinds of powers.

Its easy to tell apart the two kinds of power. Based on the source. The character of the source is the powers of the source. Note how the distinction between what is of God and what is of the devil is made below;

Galatians 5:22 - But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith,
23: Meekness, temperance: against such there is no law. 24: And they that are Christ's have crucified the flesh with the affections and lusts.

Those affections and lusts that need to be crucified are actually powers that are destroyed by that which comes from God. Those powers are spirit. That means ability to control. Its why fear and anxiety, lust,  can exist without reason and seem to control man. And the writer implores man to walk in the way of righteousness...

Verse 26: Let us not be desirous of vain glory, provoking one another, envying one another.

Gods power, unlike the powers of darkness, will not take over the will of man. The grace to overcome will be present, without pressure, and it is easy to ignore this Spirit that is many a time referee to as the quiet voice, a voice that fades away gradually when its ignored, till its mute. See, that's because when ignored, the powers of darkness gain ground, strength in the spirit of man, and the resultant silence is as a result of the ability of the powers of darkness - the powers of this age to blind the eyes of men. So watch out...this is the power of the gods of this world...wickedness.

That would call for a definition of wickedness- refer to the earlier topic, "What is Wickedness"

This is what it means to walk in the Spirit. To utilize the grace, the power of God against the powers of darkness;

V.25 If we live in the Spirit, let us also walk in the Spirit.