'Believe' in the Bible

righteousness of God by faith of Jesus Christ towards all,and upon all those who believe: for there is no difference;

And he received the sign of circumcision as seal of the righteousness of faith which he had being in uncircumcision, that he might be the father of all them that believe being in uncircumcision, that righteousness might be reckoned to them also;

Now if we have died with Christ, we believe that we shall also live with him,

that if thou shalt confess with thy mouth Jesus as Lord, and shalt believe in thine heart that God has raised him from among the dead, thou shalt be saved.

How then shall they call upon him in whom they have not believed? and how shall they believe on him of whom they have not heard? and how shall they hear without one who preaches?

that I may be saved from those that do not believe in Judaea; and that my ministry which I have for Jerusalem may be acceptable to the saints;