Diamond Sutra, chapter 26
"Subhuti, if any person were to say that the Buddha is now coming or going, they would not have understood the principle I have been teaching. Why? Because the true Buddha is never coming from anywhere or going anywhere. The name 'Buddha' is merely an expression. The true Buddha, the true Awakened one, is within you and never comes or goes."
In this section the Buddha is using the word Buddha but he isn't referring to himself at this point. He's referring to our Buddha nature, the seed of Enlightenment that is present in every being. He's telling us to not be distracted by thinking about him and his Awakening. He is telling us to instead think about our own.