'Belief' in the Bible

And in the belief that he was with some of their number, they went a day's journey; and after looking for him among their relations and friends,

The apostles said to the Lord, “Increase our faith [our ability to confidently trust in God and in His power].”

Jesus said to him, “Get up and go [on your way]. Your faith [your personal trust in Me and your confidence in God’s power] has restored you to health.”

If you are the Christ, say so. But he said, If I say so you will not have belief;

But these words seemed foolish to them, and they had no belief in them.

And he said, O foolish men! how slow you are to give belief to what the prophets have said.