My mouth shall show forth thy righteousness ... - See the notes at Psalms 71:8. The word “righteousness” here refers to the righteous character of God, particularly as manifested in his behalf; the word “salvation” refers to what God had done to deliver him from his dangers.
For I know not the numbers thereof - That is, I cannot estimate the amount of thy favors; they are innumerable. See the notes at Psalms 40:5.