Most of us have heard the common parallelism that because children's views of God are developed initially and primarily through the lens of their parents, specifically their fathers, a huge burden of responsibility lay upon those fathers not to raise children with warped or distorted views of the heavenly Father.

But I think this idea is more universal than child-parent. In almost any situation where one believer is urging a weaker brother or sister to exercise more faith, that exercise can be surprisingly affected by the strength of the one doing the urging.

To put it more bluntly: It can be hard for someone to obey your urging for them to trust God if they're not even sure they can trust you.

It shouldn't necessarily be that way, especially since we're all imperfect, we all sin. But just as children develop whatever level of trust they have in God through the lens of their parents, weaker or less mature brothers and sisters in Christ may falter simply because the one urging them on is not steady himself. (Yes, not one of us is perfectly steady, but hopefully you get what I mean.)

Trust begets trust.
Be a trustworthy person so that you may glorify the trustworthiness of God.