He is the Ever Living, La ilaha illa Huwa (none has the right to be worshipped but He), so invoke Him making your worship pure for Him Alone (by worshipping Him Alone, and none else, and by doing righteous deeds sincerely for Allah's sake only, and not to show off, and not to set up rivals with Him in worship). All the praises and thanks be to Allah, the Lord of the 'Alamin (mankind, jinns and all that exists).