Jesus wasn't sent to earth randomly. He came in the fullness of time.
Galatians 4:4-5
4 But when the fullness of time had come, God sent forth his Son, born of woman, born under the law, 5 to redeem those who were under the law, so that we might receive adoption as sons.
English Standard Version (ESV)
The Holy Bible, English Standard Version. ESV® Text Edition: 2016. Copyright © 2001 by Crossway Bibles, a publishing ministry of Good News Publishers.