In light of the alleged "Asbury Revival" (which I'm not necessarily endorsing OR denouncing), here's Gavin Ortlund's video on revivals in general in light of the recent Asbury Revival.
Revival at Asbury? A Theological Reflection
https://youtu.be/MwF-d4ghKVA
Charles Spurgeon Sermon - Repentance Unto Life
https://youtu.be/edf57HsYof4
TEXT of Charles Spurgeon's sermon "Repentance Unto Life"
The Doctrine of Repentance by Puritan Thomas Watson
https://www.chapellibrary.org/book/dor2/doctrine-of-repentance-the-watsonthomas
OR
https://www.gracegems.org/Watson/repentance.htm
OR
https://www.monergism.com/doctrine-repentance-ebook
Monergism's massive collection of resources and links on the topic of Repentance:
https://www.monergism.com/topics/repentance
The Eastern Orthodox Church Does NOT Want You to Read the Bible [For Yourself]
https://youtu.be/WV7uiGMKszs