Luke2427.
Most Calvinists believe God uses means to bring people to himself. Now, many Calvinists espouse a mystical means- almost like Holy Spirit fairy dust that God sprinkles on a person's heart and they suddenly believe apart from the "four c's."
But others of us deny this mystical means.
I do not think that the work of the Spirit which is clearly revealed to be His direct working should be spoken of by you as....MYSTICAL MEANS.
Maybe I am not reading your post correctly.
25 And I have sprinkled over you clean water, And ye have been clean; From all your uncleannesses, and from all your idols, I do cleanse you.
26 And
I have given to you a new heart, And
a new spirit I give in your midst, And I have turned aside the heart of stone out of your flesh, And I have given to you a heart of flesh.
27
And My Spirit I give in your midst, And I have done this, so that in My statutes ye walk, And My judgments ye keep, and have done them.
Jesus described this in Jn 3-
8 The wind bloweth where it listeth, and thou hearest the sound thereof,
but canst not tell whence it cometh, and whither it goeth: so is every one that is born of the Spirit.
This unseen work of the Spirit manifests itself from the inside out.
It is spiritual, not mystical......it is not just educational and mental.
The natural aspects of our human frame ,hearing ,seeing, thinking, are enabled by the Spirit to begin to correctly process the things freely given by the Spirit.
This is the effectual working of the Spirit.
10
But God hath revealed them unto us by his Spirit: for the Spirit searcheth all things, yea, the deep things of God.
11 For what man knoweth the things of a man, save the spirit of man which is in him?
even so the things of God knoweth no man, but the Spirit of God.
12 Now we have received, not the spirit of the world, but the spirit which is of God;
that we might know the things that are freely given to us of God.
13 Which things also we speak, not in the words which man's wisdom teacheth, but which the Holy Ghost teacheth; comparing spiritual things with spiritual.
14 But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know them,
because they are spiritually discerned.
15 But he that is spiritual judgeth all things, yet he himself is judged of no man.