This was the second of three occasions on which the Father in heaven validated His Son on earth (Matthew 3:17; John 12:28). Many years later, Peter referred again to this voice from heaven (2 Peter 1:17,18).

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