Jehovah describes the eternal fates of two sets of people. In the previous verses, He described those who accepted Him. In these verses, he addresses the fate of the second set. When those who would not accept Him and take upon them His name in this world finally stand before Jehovah in judgment, He will declare that He never knew them.
The stakes of belief are not earthly. They are not political. They are eternal. In the common method of scripture, the division between good and evil, between God and the Devil, are made into binary opposites. Therefore, there are only two types mentioned. Those who accept the Jehovah as their God and Redeemer will be redeemed. Those who do not, will not. Jehovah declares that this applies to the covenant made to accept the gospel as part of the church.
If one hears Jehovah’s voice, that person will be received into the church. That person will be the one who stands with God at the last day. Those who reject the church also reject the covenant and, therefore, God. They will not be redeemed in the last day.