This is quoted from Isaiah 35:3 in the context of anticipating future millennial glories. We as sons of the Father should learn to profit from His chastening as proof of His love and training as He prepares us for great responsibilities in the ages to come.

Source:

KJV Defenders Study Bible, by Dr. Henry Morris, Ph.D.
Publisher: Thomas Nelson
Language: English
DEF 10 ISBN 0-529-10444-x
DEF 10-1 ISBN 0-529-10445-8