It's a word we usually use when we're pointing away from ourselves, when we want someone or something to move in a direction away from us. Go, we say...over there. Or wherever you end up from here, just go.
But when God says, "Go," He means something else entirely. And we see this very early in His Word.
As we are introduced to Abram, God is starting to make promises to the childless old man. God is starting to talk about descendants as numerous as the stars in the sky or the sand on the seashore. God is starting to talk about a promised land. And God says to this man, in the place where he now stands, "Go..."
But not just "go." "Go...to the place that I will show you."
That last part of the phrase means something very important: it means God is going, too. It doesn't mean that God is pulling out some cosmic map and pointing to a place that Abram should go; that would have been bizarre in the ancient world. Neither does God tell Abram to go to the place that He will tell the man about. He's not just talking. He says plainly, "Go to where I will show you." And that means, God is going.
It's easy for us to forget sometimes that God goes with us, but how could He not? This is the God who walked with Adam and Eve in the cool of the day, who met Elijah on the mountain, who had to wash the dust and dirt of Galilee off His very own feet. Of course He goes with us.
These words He spoke to Abram confirm it.