'Believing' in the Bible

because on account of him many of the Jews were going and believing in Jesus.

Then he said to Thomas, "Place your finger here and see my hands, and place your hand and put [it] into my side. And do not be unbelieving, but believing!"

but these [things] are recorded in order that you may believe that Jesus is the Christ, the Son of God, and that [by] believing you may have life in his name.