Denzinger 814
Can. 4. If anyone shall say that man’s free will moved and aroused by God does not cooperate by assenting to God who rouses and calls, whereby it disposes and prepares itself to obtain the grace of justification, and that it cannot dissent, if it wishes, but that like something inanimate it does nothing at all and is merely in a passive state: let him be anathema [cf. n. 797].
Denzinger 797
It [the Synod] furthermore declares that in adults the beginning of that justification must be derived from the predisposing grace [can. 3] of God through Jesus Christ, that is, from his vocation, whereby without any existing merits on their part they are called, so that they who by sin were turned away from God, through His stimulating and assisting grace are disposed to convert themselves to their own justification, by freely assenting to and cooperating with the same grace [can. 4 and 5], in such wise that, while God touches the heart of man through the illumination of the Holy Spirit, man himself receiving that inspiration does not do nothing at all inasmuch as he can indeed reject it, nor on the other hand can he [can. 3] of his own free will without the grace of God move himself to justice before Him. Hence, when it is said in the Sacred Writings: “Turn ye to me, and I will turn to you” [Zach. 1:3], we are reminded of our liberty; when we reply: “Convert us, O Lord, to thee, and we shall be converted” [Lam. 5:21], we confess that we are anticipated by the grace of God.