There is a tremendous moral chasm that separates us from God. It is a chasm created by sin and every human attempt to bridge that divide just leads to spiritual death below. But God chose to bridge that chasm - and that bridge is called the cross.
But there is an even greater chasm that divides us, one that is also bridged by the cross. God is distant from us not only because of a moral chasm but because “his thoughts are not our thoughts” and “his ways are not our ways” — God is almost incomprehensible to us. Likewise, our experience as struggling human beings is far removed from God. The cross bridges this chasm as well. Jesus, fully human and fully divine, both makes God known to us and allows God to empathize with our struggles. We can cross over the chasm to God because he first crossed over to us.