2 Timothy 2:12
If we suffer, we shall also reign with him: if we deny him, he also will deny us:
True faith always has the quality of permanence, and in this sense all believers do endure. However, it should be pointed out that 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 their faithfulness during this present life.