The best prayers often have more groans than words. (John Bunyan, 17th century English writer and preacher)
We may think that the only effective prayers are those offered in highly liturgical services with elevated prose and moving sentiment. Indeed, such prayers can be uplifting to those who hear them. But prayer is having a conversation with God. Even when we do not have the words to express our need, God understands what’s in our hearts.
We do not know what we ought to pray for, but the Spirit himself intercedes for us through wordless groans (Romans 8:26).