"If you be willing and obedient, you shall eat the good of the land." - Isaiah 1:19
This opportunity is given to all who are saved, but not everyone is willing to adjust to a "diet" that is conducive to spiritual growth. Therefore, Jesus said, "For many are called, but few are chosen" (Matthew 22:14).
In other words, "Few will pay the price in order to be chosen." This process of qualifying begins after we have received the gift of salvation, which has been freely provided