Actually, the pivotal point is our desire.
One Upanishad verse states that God is the self-sufficient philosopher [knower of all knowledge, source of all knowledge, and object of all knowledge] Who has been awarding everyone their desires since time immemorial.
So if we really, really want to have union with Him, our desires will indeed be realized. But, if we kind of want to know Him a little, yet stay in the well, well, that's what we'll get. He never forces knowledge of Him or relationship with Him on us. Far from it.
Fortunately for us, there are methods by which we can sharpen and increase that desire.
If knowing God is possible that desire to know must be the longing of one life.