“But as many as received Him, to them He gave the right to become children of God, to those who believe in His name: who were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God.” John 1:12-13

Most of humanity has rejected Jesus to live for self and seek worldly pleasures. Or, they have chosen to worship false gods.
They cannot grasp Jesus was with God from the beginning and all things were made through Jesus. Those things existing in this world which are not made of Jesus amount to nothing.
But those who come to Jesus are given the right to become children of God and live with Him forever. And the miracle of salvation is the Word will live in your flesh. As a believer, the life of Jesus resides in you in the essence of the Holy Spirit.
The simplicity of receiving Jesus is believing in His name. You cannot find salvation through being born into a blood line. There is nothing you can do through your own will power or the will power of another person to become saved.
Salvation is a gift from God and cannot be earned or justified through works or religious rituals.
The gift of salvation is becoming born again of the Water and Spirit. You die to your old life and become a new creature in Christ Jesus.
The Cross allows you to be free from the power of addictions, recover and heal from divorce or other traumatic events in life, receive physical healing, and live a life pleasing to God. Your focus changes from a worldly perspective to finding your help in God for all your troubles.
The primary purpose of a believer is to touch those people around you with rivers of Living Water. This is the only proven method to draw people to Jesus. They see the life of Jesus in you and are attracted to the Light!