'Believe' in the Bible

And this is his commandment, That we should believe on the name of his Son Jesus Christ, and love one another, as he gave us commandment.

Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world.

And we have come to know and to believe the love that God has for us. God is love, and the one who remains in love remains in God, and God remains in him.

(The one who believes in the Son of God has this testimony within him. The one who does not believe God has made Him a liar, because he has not believed in the testimony God has given about His Son.)

These things have I written unto you that believe on the name of the Son of God; that ye may know that ye have eternal life, and that ye may believe on the name of the Son of God.