The false teaching of mans freewill in the matter of salvation especially is actually a denial of the Gospel of Gods Grace. A few reasons why I say that. It denies that God is God. It promotes the false concept that God cant do what He wants with man in salvation unless man allows Him to, Yet the God of scripture is described here Ps 115:3
But our God is in the heavens: he hath done whatsoever he hath pleased. The word pleased here means:
will, desire
Ps 135:6
6 Whatsoever the Lord pleased, that did he in heaven, and in earth, in the seas, and all deep places.
Salvation is by the Sovereign will and Grace of God Eph 1:4-5,11
4 According as he hath chosen us in him before the foundation of the world, that we should be holy and without blame before him in love:
5 Having predestinated us unto the adoption of children by Jesus Christ to himself, according to the good pleasure of his will,
11 In whom also we have obtained an inheritance, being predestinated according to the purpose of him who worketh all things after the counsel of his own will:
Whatever God pleases to do He does, because God is God, yet the false doctrine of mans freewill denies this !
Dan 4:34-35
34 And at the end of the days I Nebuchadnezzar lifted up mine eyes unto heaven, and mine understanding returned unto me, and I blessed the most High, and I praised and honoured him that liveth for ever, whose dominion is an everlasting dominion, and his kingdom is from generation to generation:
35 And all the inhabitants of the earth are reputed as nothing: and he doeth according to his will in the army of heaven, and among the inhabitants of the earth: and none can stay his hand, or say unto him, What doest thou?