Moshe did not only plead with God to let him into the Holy Land, Moshe asked God to enable him to ask for what he desired. Moshe needed help to be able to express himself fully and to the best of his ability, and this request was granted. Moshe was not permitted to enter the land, but Moshe’s request to express himself fully and clearly regarding this deep need, his prayer for prayer, was granted.
Moshe’s predicament was not his alone. We all have difficulty expressing ourselves and we all sometimes need a prayer for prayer.