Remember your [previous] leaders [in faith], who spoke the word of God to you. Consider the outcome of their way of life and imitate their faith. Jesus Christ is the same yesterday and today and forever.

—Hebrews 13:7-8 (TNIV)

Our faith is dependable because its object does not change. That was the whole point of the previous examples of folks who lived and died in faith that the writer of Hebrews cited, and why we should imitate them. Our faith does not have a moving target at which to shoot. That’s why it is trustworthy.