Here is my take on it.
Jesus came as the second Adam to restore what our first ancestors lost in the Garden. His lineage was purified during the course of the old testament involving different chosen figures like Abraham, Noah, Moses, Jacob, Esau, Isaac, Tamar, etc.etc. He was born sinless as a Godly child. He proclaimed the Kingdom of God is at hand but was rejected by the chosen people God had prepared to receive him. He could not start a new sinless family. His body was killed and crucified but his spirit was victorious. Through his resurrection, we can receive spiritual salvation.
Jesus is in us (if we choose to accept him) and he is preparing the world to receive the 3rd Adam that he will anoint to fulfill God absolute and unchanging will.
In Genesis God gave man 3 blessings. 1)Be fruitful 2) Multiply 3) Dominate the earth
This is what the Kingdom of God is. Unfortunatly, the first family was tainted through the fall and we created a satanic world.