Actually sir, Jesus instituted a new covenant in which he made with his faithful 11 on the last day of his life as a human on earth. Later additions to the Bible clarified the who, what, and whys of this covenant. It was limited to, and numbered as 144k who would be redeemed from the earth through the covenant. The other sheep Jn 10:16 would inherit the earth as was intended from the start Mat 5:5; Ps 37:29
I know this may be difficult to understand, but Jehovah formed the earth to be inhabited Isa 45:18 and what He says will come about Isa 55:11, and He has not changed His mind Mal 3:6