This is from Andrew Fuller: "Those who were under the dominion of malignity and evil COULD NOT speak peaceably; and those who have eyes full of adultery CANNOT cease from sin.
Hence also the following language - How CAN you being evil, speak good things? The natural man does not receive the things of the spirit of God, nor CAN he know them. The carnal mind is enmity against God, and is not subject to the law of God, neither indeed CAN be. Those who are in the flesh CANNOT please God. No one CAN come to me unless the Father who sent me draws him".
So while it is truly a situation of "can't" it is not a natural inability which would give an excuse but an inability due to an inclination which we are responsible for.
Reference from:
DEFINITIONS OF DOCTRINE
VOLUME II
SIN SALVATION SERVICE
CLAUDE DUVAL COLE
In Rom. 8:28 this call is said to be
"...according to his purpose"
. And II Tim. 1:9 is to the same effect:
"Who hath saved us, and called us with an holy calling,
not according to our works,
but according to his own purpose and grace,
which was given us in Christ Jesus before the world began."
THE NECESSITY OF THE EFFECTUAL CALL
Human depravity---the condition of fallen human nature makes a special and supernatural call necessary for the conversion of the sinner. Man by nature has his understanding darkened by sin, his heart is hard, and his mind is enmity against God.
If the sinner loved God and understood the gospel, he would at once, on hearing the gospel, lovingly and gladly respond to the good news about Christ as the Saviour. But he must undergo a change of mind and heart before he will receive Christ as Lord and Saviour. And this change is not self-wrought, but God-wrought. Paul told Timothy to preach in the hope that
"...God peradventure will give them repentance
(change of mind)
to the acknowledging of the truth; And that they may recover themselves out of the snare of the devil, who are taken captive by him at his will,"
(IITim. 2:25-26).
This special call of the Holy Spirit is necessary because the gospel call--the word only--is not sufficient for the conversion of the lost man.
"Knowing, brethren beloved, your election of God. For our gospel came not unto you in word only, but also in power, and in the Holy Ghost. . . ."
(IThess. 1:4-5).
Bunyan says "I believe that, to effectual calling, the Holy Ghost must accompany the word of the gospel, and that with mighty power." The gospel is suitable and sufficient as the means of conversion, but there must also be an agent with power to effect it. There must be the Divine workman as well as Divine equipment. The word is said to be the sword of the Spirit. In the call that goes unheeded, we have the gospel and the preacher; in the effectual call we have the gospel, the preacher, and the Holy Spirit. And it is the Holy Spirit who makes the gospel effective in the conversion of the sinner.
THE REASON FOR THE EFFECTUAL CALL
The effectual call; the call of the Holy Spirit; the call that secures salvation; in every case is made in pursuance of God's eternal purpose. In Rom. 8:28 this call is said to be
"...according to his purpose"
. And II Tim. 1:9 is to the same effect:
"Who hath saved us, and called us with an holy calling, not according to our works, but according to his own purpose and grace, which was given us in Christ Jesus before the world began."
Salvation is not an accident; it is not a chance happening; but the coming to pass of God's eternal purpose in Christ. The effectual call is the divine act by which the foreknown are brought into a saved state. It is the inaugural of the elect; the induction into saintship. Salvation is of the Lord, and every Christian should ascribe his conversion to the work of the Holy Spirit. Every Christian is a God-made man, and therefore, a grace-made man, since he has not merited salvation. It is God who has made us to differ from the lost..."