1. Mother - The first person to welcome you in this world.

2. Father - The first person to go through all the hardships just to see you smile.

3. Sibling - The first person to teach you the art of 'sharing and caring'.

4. Friend - The first person to teach you how to respect people with different opinions and viewpoints.

5. Life partner - The first person to make you realize the value of sacrifice and compromise.

6. Your Children - The first little person to teach you how to be selfless and think about others before yourself.

7. Your Grandchildren - The only persons who make you want to live the life, all over again ... (seen on a car sticker "If we had grandchildren before children")

Source

“Be careful of (your duty to) Allah, by Whom you demand one of another (your rights), and (to) the ties of relationship; surely Allah ever watches over you.” (Surah an-Nisa, 1)

“And (remember) when We made a covenant with the Children of Israel, (saying): Worship none save Allah (only), and be good to parents and to kindred and to orphans and the needy, and speak kindly to mankind; and establish worship and pay the poor-due. Then, after that, ye slid back, save a few of you, being averse.” (Surah al-Bakarah, 83)