The Bible says unless a person believes in Jesus Christ as their Lord and savior they are separated from God.
How exactly does this faith in Christ come about, from scripture. "Soul winners" will knock on people's door or go out street preaching the message "believe in Jesus" and I agree faith is needed. The question is: How do we do that? Specifically how can a lost person get faith in Jesus?
OP Question: Faith: How does a person get it?
Answer: Rom 12:3 For I say, through the grace given unto me, to every man that is among you, not to think of himself more highly than he ought to think; but to think soberly, according as God hath dealt to every man the measure of faith.
(NOTE: God hath dealt to every man the measure of faith!
Additional related scripture:
Rom 3:22 Even the righteousness of God which is by "faith of Jesus Christ" unto all and upon all them that believe: for there is no difference:
(NOTE: The Faith "OF" Christ)
Gal 2:16 Knowing that a man is not justified by the works of the law, but by the "faith of Jesus Christ", even we have believed in Jesus Christ, that we might be justified by the "faith of Christ" and not by the works of the law: for by the works of the law shall no flesh be justified.
(NOTE: It's the Faith "OF" Christ & thru the righteousness of Christ's obedient works. That when we place our faith in Him & His work. Christ becomes the Lord our righteousness (Jer 23:6 & 33:16). And God judicially justifies us ="Declares us Righteous in His sight)
Gal 2:20 I am crucified with Christ: nevertheless I live; yet not I, but Christ liveth in me: and the life which I now live in the flesh I live by the "faith of the Son of God", who loved me, and gave himself for me.
(NOTE: It's by the faith "OF" the Son of God, who loved us, and gave himself as a sin sacrifice for us)
Gal 3:22 But the scripture hath concluded all under sin, that the promise by "faith of Jesus Christ" might be given to them that believe.
(NOTE: The promise by the faith "OF" Jesus Christ. Then our Faith placed in Christ's work)
Habakkuk 2:4 Behold, his soul which is lifted up is not upright in him: but "the just shall live by his faith".
(NOTE: The just live by "HIS" faith!)
Gal 2:16 Knowing that a man is not justified by the works of the law, but by the "faith of Jesus Christ", even we have believed in Jesus Christ, that we might be justified by the "faith of Christ" and not by the works of the law: for by the works of the law shall no flesh be justified.
(NOTE: It's the Faith "OF" Christ & thru the righteousness of Christ's obedient works. That when we place our faith in Him & His work. Christ becomes the Lord our righteousness (Jer 23:6 & 33:16). And God judicially justifies us ="Declares us Righteous in His sight)
Phil 2:8 And being found in fashion as a man, he humbled himself, and became obedient unto death, even the death of the cross.
(NOTE: Jesus gave is life to obedience)
Rom 5:19 (B) so "by the obedience of one" shall many be made righteous.
(NOTE: It's "By The Obedience Of One" = Jesus: Whereby many will be made righteous via faith)
Phil 3:9 And be found in him, not having mine own righteousness, which is of the law, but "that which is through the "faith of Christ", the righteousness which is of God by faith:
(NOTE: Not by our own righteousness obtained thru law keeping. BUT by our faith placed in the faith "OF" Christ)