So often people think of the cross when thinking about Christianity. But what does it actually signify? 

The simplest way to say it is that the cross is the manifestation of God's Love for His people.

For this is how much God loved the world—he gave his one and only, unique Son as a gift. So now everyone who believes in him will never perish but experience everlasting life.
‭‭- John‬ ‭3:16‬ ‭TPT‬‬