Well once again, your verse talks about enduring, but you dont explain the enduring.
Are you enduring "sinning and confessing"?
Are you enduring, "The biden administration"?
Are you enduring "Legalism"?
Listen, There was no Cross yet , in your verse.
So, you have to take verses that are 'pre-cross", and apply this....>"see them in light of the Cross".
Let me tell you when the "gift of righteousness" will end, and the "enduring will begin".
That happens when the Great Trib starts, as there is no more "justified by faith without works", once that begins.