We have not heard a word from Jesus these past 2000 years .
Biblical, historical 1st century type Christians are born again with a new spirit. This new spirit is sinless and so provides a foothold for the eventual redemption of the whole tripartite man: Spirit, Soul & Body. God interacts directly with the new spirit in a born again believer. Much more efficient than talking into a persons' ears.
Jesus said that when the Holy Spirit comes, that he would instruct born again believers into all the ways of truth.
The cross was God's final word on mans' attempt at being good. Not a lot to talk about after that.