1 John 2:23 (NKJV) – “Whoever denies the Son does not have the Father either; he who acknowledges the Son has the Father also”
Throughout the Bible, we see the oneness and the relationship between Jesus Christ and God the Father in Heaven. God sent Jesus to this world as a sacrifice for our sins so that we may have eternal life. In the above verse, John says that those who deny Jesus as the Son of God and the Messiah, deny God too. They are one. In John 10:30, Jesus declares that God the Father and He are one. You cannot accept one and deny the other.
In John 14:6 Jesus declares that He is the way, the truth, and the life, and the only way to reach God the Father is through Him. Jesus intercedes with God on our behalf. Without Jesus, we would have no way to reach God.
In John 3:16, The Bible says that our God in Heaven loved us and this whole world so much that He gave His Only Son to us so that all who believe in Him will have eternal life.
In John 11:25, Jesus declares that He is the resurrection and the life and that all those in believe in Him will have eternal life with Jesus in Heaven.
It is specified clearly in the Bible that the way to God is through Jesus and those who believe in Jesus, will have eternal life in God’s kingdom. Contrarily, for those who don’t believe in Jesus as the Son of God, the Messiah, they are false in their belief and deny God when they deny Jesus.