Charles H. Spurgeon on Psalms 86:6

Give ear, O LORD, unto my prayer. Even the glory which his spirit had beheld did not withdraw him from his prayer, but rather urged him to be more fervent in it; hence he implores the Lord to hear his requests. Attend to the voice of my supplications. Here are repetitions, but not vain repetitions. When a child cries it repeats the same note, but it is equally in earnest every time, and so was it with the suppliant here. Note the expression, "the voice of my supplications", as if they were not all voice but were partly made up of inarticulate noise, yet amid much that was superfluous there really was a distinct voice, an inner meaning, a living sense which was the heart's intention. This he would have the Lord sift out from the chaff, and hear amid the mingled din. May our prayers never be voiceless; may the soul's intent always give them a live core of meaning.