Here are some Christian scholars who do not teach “Once Saved Always Saved”. I’ll preface their quotes by warning you that they are not modern thinkers like Dr. Scofield D.D. Perhaps these men were just “old-fashioned”

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“And pray ye without ceasing in behalf of other men; for there is hope of the repentance, that they may attain to God.
For 'cannot he that falls arise again, and he may attain to God.’” *Ignatius of Antioch, To the Ephesians, 10 ( A.D. 110). *
“Watch for your life’s sake. Let not your lamps be quenched, nor your loins unloosed; but be ye ready, for ye know not the hour in which our Lord cometh. But often shall ye come together, seeking the things which are befitting to your souls:
for the whole time of your faith will not profit you, if ye be not made perfect in the last time.” *Didache, 16 (A.D. 90). *
“And as many of them, he added, as have repented, shall have their dwelling in the tower. And those of them who have been slower in repenting shall dwell within the walls. And as many as do not repent at all, but abide in their deeds, shall utterly perish…Yet they also, being naturally good, on hearing my commandments, purified themselves, and soon repented. Their dwelling, accordingly, was in the tower.
But if any one relapse into strife, he will be east out of the tower, and will lose his life.” *Hermas, The Shephard, 3:8:7 (A.D. 155). *
"[T]hat eternal fire has been prepared for him as he apostatized from God of his own free-will, and likewise for all who unrepentant continue in the apostasy, he now blasphemes, by means of such men, the Lord who brings judgment [upon him] as being already condemned, and imputes the guilt of his apostasy to his Maker, not to his own voluntary disposition." *Justin Martyr, fragment in Irenaeus’ Against Heresies, 5:26:1 (A.D. 156). *
“Now,** in the beginning the spirit was a constant companion of the soul, but the spirit forsook it because it was not willing to follow**. Yet, retaining as it were a spark of its power, though unable by reason of the separation to discern the perfect, while seeking for God it fashioned to itself in its wandering many gods, following the sophistries of the demons. But the Spirit of God is not with all, but, taking up its abode with those who live justly, and intimately combining with the soul, by prophecies it announced hidden things to other souls.”
Tatian the Syrian, To the Greeks, 13 (A.D. 175).
That’s just a sample. I can’t even begin to fit all of the quotes here.
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