My faith is most challenged when the purposeful hand of God moves invisibly, according to His perfect will, which appears to be just outside my line of vision.

For I know the thoughts that I think toward you,” says Yahweh, “thoughts of peace, and not of evil, to give you hope and a future. You shall call on me, and you shall go and pray to me, and I will listen to you.
Jeremiah 29:11-12, WEB