This poem is an excerpt from the book How I Know God Answers Prayer by Rosalind Goforth. Quite a challenge!

I cannot tell why there should come to me

A thought of someone miles and years away,

In swift insistence on the memory,

Unless there is a need that I should pray.

We are too busy to spare thought

For days together of some friends away;

Perhaps God does it for us -- and we ought

To read His signal as a sign to pray.

Perhaps just then my friend has fiercer fight,

A more appalling weakness, a decay

Of courage, darkness, some lost sense of right;

And so, in case he needs my prayers -- I pray.