Isaiah 48:17
Thus says the Lord,
your Redeemer, the Holy One of Israel:
“I am the Lord your God,
who teaches you to profit,
who leads you in the way you should go."
All of us have decisions to make - every day. We may not even recognize the significance of the decisions when we are making them. How can we know we're doing the right thing? Jesus said that his sheep hear his voice (John 10:27). And we find this promise in Isaiah that God leads us in the way we should go. Pray that we pay attention to God's direction and follow as he leads us where we should go.
from "30 Ways to Pray for Missionaries," compiled by Elaine Helms for the NAMB. (the full list in pdf form is available here)