If you cannot be a watchman, Standing high on Zion’s wall,
Pointing out the path to heaven, Off’ring life and peace to all,
With your prayers and with your bounties You can do what God commands;
You can be like faithful Aaron, Holding up the prophet’s hands.

Some are called to the front lines of the mission fields. Others are called to support roles. Some are mighty prayer partners. Some are able to give more financially because of the way they have been blessed by God. But this hymn makes the point that every believer has a part to play in this mission. It is all part of what “God commands” or as earlier versions of the hymn put it, “you can do what God demands.” You can do your part. You need to do your part.

Let none hear you idly saying, “There is nothing I can do,”
While the multitudes are dying And the Master calls for you.
Take the task He gives you gladly, Let His work your pleasure be.
Answer quickly when He calls you, “Here am I, send me, send me!”

We need to echo the words of Isaiah not just in our speaking, but in our actions. It does not have to be a grand gesture or something that is seen by others. Just let your little Gospel light shine wherever you are. Share the Good News of a Savior that you have come to know, taken to heart, and in which you live. You never know how the Holy Spirit will use your witness. Just share what you know: Jesus lived and died and rose again to pay for the sins of all people and open heave to all who will put their faith in Him. That will make the difference.