What does the Bible say about increasing faith?

In Luke 17:5-10, the apostles requested an increase in their faith after hearing Jesus' teaching on forgiveness. They recognized their own insufficiency in obeying the call to forgive others. Jesus responded by highlighting that even a tiny amount of faith, like that of a mustard seed, can accomplish great things—demonstrating that it's not the quantity of faith we possess, but the object of our faith, Christ, who saves us. Thus, our faith should carry us to greater humility as we acknowledge our inability to achieve righteousness on our own.