I cried unto God with my voice - That is, he cried or prayed audibly. It was not mere mental prayer. See the notes at Psalms 3:4.
Even unto God with my voice - The repetition here is emphatic. The idea is that it was an earnest or fervent cry. Compare the notes at 2 Corinthians 12:8.
And he gave ear unto me - See Psalms 5:1, note; Psalms 17:6, note.