Stephanie,
I agree with what you say.
The entire word of God in both the old testament and new testament is about Jesus Christ.
In the old testament it is prophesies foretelling his coming to save us from our sins and give us eternal life.
He is seen through types and shadows of people God used such Adam (our Husband), Abraham (our righteousness), Isaac (our promise of God), Jacob (the beloved Son) and countless others.
In the new testament is the old testament revealed showing also that he did come and do just that.
May God bless.