He was the only way to Heaven

Therefore many other signs Jesus also performed in the presence of the disciples, which are not written in this book; but these have been written so that you may believe that Jesus is the Christ, the Son of God; and that believing you may have life in His name.

(John 20:30-31)

For the wages of sin is death, but the free gift of God is eternal life in Christ Jesus our Lord. (Romans 6:23)

for "WHOEVER WILL CALL ON THE NAME OF THE LORD WILL BE SAVED." (Romans 10:13)

For you are all sons of God through faith in Christ Jesus.(Galatians 3:26)

And the testimony is this, that God has given us eternal life, and this life is in His Son. He who has the Son has the life; he who does not have the Son of God does not have the life. (1 John 5:11-12)