Psalm 71:17 Meaning

15My mouth shall shew forth thy righteousness and thy salvation all the day; for I know not the numbers thereof.

16I will go in the strength of the Lord GOD: I will make mention of thy righteousness, even of thine only.

17O God, thou hast taught me from my youth: and hitherto have I declared thy wondrous works.

18Now also when I am old and grayheaded, O God, forsake me not; until I have shewed thy strength unto this generation, and thy power to every one that is to come.

19Thy righteousness also, O God, is very high, who hast done great things: O God, who is like unto thee!