What is my duty

Mankind! Worship your Lord, Who created you and those before you, so that hopefully you may do your duty. The Holy Qur'an, Chapter 2,Verse 21
That is Allah, your Lord. There is no god but Him, the Creator of everything. So worship Him. He is responsible for everything. The Holy Qur'an, Chapter 6,Verse 102
'My people, worship Allah! You have no other god than Him. I fear for you the punishment of a dreadful Day.' The Holy Qur'an, Chapter 7,Verse 59
The Unseen of the heavens and the earth belongs to Allah and the whole affair will be returned to Him. So worship Him and put your trust in Him. The Holy Qur'an, Chapter 11,Verse 123
Mankind! Heed your Lord and fear a day when no father will be able to atone for his son, or son for his father, in any way. Allah's promise is true. So do not let the life of this world delude you and do not let the Deluder delude you concerning Allah. The Holy Qur'an, Chapter 31,Verse 33
… So heed Allah. And know that you will be gathered back to Him.The Holy Qur'an, Chapter 2,Verse 203
Allah augments those who are guided by giving them greater guidance. In your Lord's sight, right actions which are lasting are better both in reward and end result. The Holy Qur'an, Chapter 19,Verse 76
Will they not ponder the Qur'an? If it had been from other than Allah, they would have found many inconsistencies in it. The Holy Qur'an, Chapter 4,Verse 82
"We have sent down the Book to you with truth. So worship Allah, making your religion sincerely His. Indeed the sincere religion belongs to Allah alone..." The Holy Qur'an, Chapter 39,Verse 2-3