Are you unaware in that those who run in a race all run, but only one is receiving the prize? Run in such a way that you may lay hold of the prize. Everyone who competes in the games is controlling himself in all things. They then do it to receive a perishable wreath, but we an imperishable. Therefore I run in such a way, as not dubious or without aim; I box in such a way, not as punching the air; but I buffet my body and make it my slave, lest possibly, after I have heralded others, I myself should be disqualified.
I Corinthians 9:24-27
Surely, since we have so great a cloud of witnesses surrounding us, let us also lay aside every encumbrance/impediment, and popular sin [which so easily entangles us], and let us run with endurance the race that is set before us, fixing our eyes on Jesus, the author and perfecter of faith, who for the joy set before Him endured the cross, despising the shame, and has sat down at he right hand of the throne of God. For consider Him who has endured such hostility/contradiction by sinners against Himself, so that you may not grow weary or lose heart.
As each one has received a gracious gift, be dispensing it in serving one another, as ideal stewards of the manifold/varied grace of God.
I Peter 4:10
I am aware of your acts and your toil and perseverance, and that you cannot endure evil men, and you put to the test those who call themselves apostles, and they are not, and you found them to be false; and you have perseverance and have endured for My name's sake, and have not grown weary.
I know your deeds, and your love and faith and service and perseverance, and that your deeds of late are greater than the first.
Righteous men were persecuted, but it was by the lawless; they were imprisoned, but it was by the unholy. They were stoned by transgressors: they were slain by those who had conceived a detestable and unrighteous jealousy. Suffering these things, they endured nobly.
I Clement 45:4-5
But the Christians are just and good, and the truth is set before their eyes, and their spirit is long-suffering; and, therefore, though they know the error of these (the Greeks), and are persecuted by them, they bear and endure it
Aristides' Apology, chapter 17
Let us then continually persevere in our hope, and the earn of our righteousness, which is Jesus Christ, who bore our sins in His own body on the tree, who did no sin, neither was guile found in His mouth, but endured all things for us, that we might live in Him. Let us then be imitators of His patience; and if we suffer for His name's sake, let us glorify Him. For He has set us this example.
Polycarp to the Philippians 8:1-6
we patiently endure all things contrived against us by wicked men and demons, so that even amid cruelties unutterable, death and torments, we pray for mercy to those who inflict such things upon us, and do not wish to give the least retort to any one, even as the new Lawgiver commanded us.
Justin Martyr Dialogue with Trypho 18:4
They dwell in their own countries, but only as sojourners; they bear their share in all things as citizens, and they endure all hardships as strangers. Every foreign country is a fatherland to them, and every fatherland is foreign.
Justin Mathetes to Diognetus 5:5