On Sunday, we sang a hymn that fits here because it speaks our inability to understand and pray. Neither Martin nor I remember ever having sung it before. The "Morgenglanz" melody was nice, too:
Hear us, Father, when we pray, through Your Son and in Your Spirit. By Your Spirit's Word convey all that we through Christ inherit, that as baptized heirs we may truly pray.
When we know not what to say and our wounded souls are pleading, my Your Spirit, night and day, groan within us interceding; by His sighs, too deep for words, we are heard.
Jesus, advocate on high, sacrificed on Calvry's altar, through Your priestly blood we cry: hear our prayers, though they may falter; place them on Your Father's throne as your own.
By Your Spirit now attend to our prayers and supplications, as like incense they ascend to Your heav'nly habitations. May their fragrance waft above, God of love.