Biblical "FAITH" is believing what God has said in the original languages of the Bible. He has classified all humanity as sinners...
"For all have sinned and fall short of the glory of God." (Romans 3:23-30)
Christ Jesus came into the world to save those sinners and they will be saved because that is the will of God.
“It is a trustworthy statement, deserving full acceptance, that Christ Jesus came into the world to save sinners…this is good and acceptable in the sight of God our Savior, who wills all humanity to be saved and to come to the knowledge of the truth. For there is one God, and one mediator also between God and men, the man Christ Jesus, who gave Himself as a ransom for all, the testimony given at the proper time... it is a trustworthy statement deserving full acceptance, for it is for this we labor and strive, because we have fixed our hope on the living God, who is the Savior of all humanity, especially of believers. Prescribe and teach these things.” (1 Timothy 1:15; 2:3-6; 4:9-11).
A few people believe what God says and many do not. Nevertheless, all will believe at the close of the ages because they will have been gloriously saved out of death by the grace of God...
“For the grace of God has appeared, bringing salvation to all men, instructing us to deny ungodliness and worldly desires and to live sensibly, righteously and godly in the present age, looking for the blessed hope and the appearing of the glory of our great God and Savior, Christ Jesus, who gave Himself for us to redeem us from every lawless deed, and to purify for Himself a people for His own possession, zealous for good deeds.” (Titus 2:11-14)
Having faith in what God says pleases Him.