Grace according to dictionary means bring honor or credit to (someone or something) by one's attendance or participation while Age according to dictionary means a period of human life, measured by years from birth, usually marked by a certain stage or degree of mental or physical development and involving legal responsibility and capacity.
In life people tends to count Age and neglect Grace. Grace building man while Age destroy man..... example: a man of 45years old can't be controlled by a boy of 7 when considering Age but when considering Grace the 45 year old man will view the sense of equality and confirm to the command of the 7 year old boy....
therefore neglect AGE and focus on GRACE.