After the sin of the Golden Calf, God informed Moses that, for Israel's safety and survival, He would not accompany them to the Promised Land. Moses protested and the Mishkan was God's solution that He could both be with them and safely separated. In this we see the Father's desire to be with His family tempered by His sense of justice. As with raising human children, both love and justice are necessary for the child's good. The Mishkan represents the balance between them.