Bible Verses About Perseverance: The intercession of Christ

Simon, Simon, behold, Satan asked to have you, that he might sift you as wheat:

but I made supplication for thee, that thy faith fail not; and do thou, when once thou hast turned again, establish thy brethren.

And I am no more in the world, and these are in the world, and I come to thee. Holy Father, keep them in thy name which thou hast given me, that they may be one, even as we are.