John 10:25-26 says, “Jesus answered them, I told you, and YE BELIEVED NOT: the works that I do in my Father’s name, they bear witness of me. But YE BELIEVE NOT, because ye are not of my sheep, as I said unto you. But YE BELIEVE NOT, because ye are not of my sheep, as I said unto you
The unbelieving Jews were not of His sheep because they did not believe. We do not become His sheep until we believe. And once we become His sheep by believing, we continue believing. All who believe in Jesus are given to Jesus by the Father. All who believe in Jesus become His sheep and therefore hear His voice. Jesus knows His sheep and His sheep know Him. All of His sheep are given eternal life. No man will ever pluck a sheep out of His hand. Belief is always God’s answer.
“In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise,” (Ephesians 1:13).