If we suffer for Christ, we will reign with Him  -  2 Timothy 2:12

If we suffer, we shall also reign with him: if we deny him, he also will deny us:

Not all will reign with Christ to the same extent. When He comes back to reign over the earth, His saints will return with Him and share in that rule. But the extent of one’s rule will be determined by our faithfulness during this present life. Those who deny Christ will be denied by Him. This is not a temporary denial under duress but a permanent, habitual denial of Him. Those who permanently and habitually deny Christ are not believers and will end where all unbelievers end, eternity in hell.