God determined that there is only one way in which He would give this offer to save people
Jesus said to him, “I am the way, and the truth, and the life; no one comes to the Father but through Me.
Jesus always was God, and then became a man as well when He came to the earth.
In the beginning was the Word, and the Word was with God, and the Word was God.
He came to earth because each person’s sin must be justly punished. As the perfectly just Judge, He cannot ignore sin.
On the day when, according to my gospel, God will judge the secrets of men through Christ Jesus.
By Jesus’ sinless life, death on the cross and resurrection, He took the punishment for sin for all who would trust in Him. In doing this God earned the right to restore people to a relationship with Him
…yet He has now reconciled you in His fleshly body through death, in order to present you before Him holy and blameless and beyond reproach.
By doing this he solves two problems. First, He completely forgives the sins of all who ask Him.
1 John 1:9
If we confess our sins, He is faithful and righteous to forgive us our sins and to cleanse us from all unrighteousness.
Second, He also gives them the complete righteousness that God expects of them.
2 Corinthians 5:21
He made Him who knew no sin to be sin on our behalf, so that we might become the righteousness of God in Him.
In the eyes of God, it is as if they have never sinned and have lived perfectly “God-Centered” their entire life.
For by one offering He has perfected for all time those who are sanctified.
Only His work and worth can be the hope of a person. Salvation is completely accomplished by Christ alone, without any assistance from the person.