I would like to recommend Edmund P. Clowney, CM: Christian Meditation: What the Bible teaches about meditation and spiritual exercises (Vancouver: BC, Regent College Publishing, 1979).
https://www.amazon.com/Christian-Meditation-Edmund-P-Clowney/dp/1573832278/ref=sr_1_22?dchild=1&keywords=Christian+Meditation&qid=1618674239&sr=8-22
This is an excellent book that addresses Christian spirituality from a thoroughly biblical approach, and I believe it fills what is currently a very large void in Faithlife/Logos library in the area of Christian spirituality.
