7:26
वेदाहं समतीतानि वर्तमानानि चार्जुन ।
भविष्याणि च भूतानि मां तु वेद न कश्चन ॥७- २६॥
bhawiShyaaNi cha bhootaani maaM tu weda na kashchana ॥७- २६॥
Source: Automatic ITRANS Transliteration
I know beings of the past and present, Arjun,
And the future, yet I am not known by any of them.
Source: Milind S. Pandit
I know, O Arjuna, the beings of the past, of the present, and those of the future, but no one really knows Me.
O Arjuna, as the Supreme Personality of Godhead, I know everything that has happened in the past, all that is happening in the present, and all things that are yet to come. I also know all living entities; but Me no one knows.
Source: Bhagavad Gita As It Is