“In that hour Jesus rejoiced in Spirit, and said, I thank Thee, O Father, Lord of heaven and earth, that Thou hast hid these things from the wise and prudent, and hast revealed them unto babes: even so, Father; for so it seemed good in Thy sight. All things are delivered to Me of My Father: and no man knoweth who the Son is, but the Father; and who the Father is, but the Son, and he to whom the Son will reveal Him.” Luke 10:21-22 (KJV)
Jesus rejoiced in the Spirit because of what He had previously said. He saw Satan fall like lightning from heaven and had given the ones whom He sent out power to tread on the evil forces of hell.
Now He speaks to the Father, thanking Him for His revelation to others of who the Son is and that no one can know the Son except the Father, and no one can know the Father except the Son. Now if I were to leave it there that would leave us all lost.
“…And he to whom the Son will reveal Him”.
To Know God the Father and God the Son is not done by our choice. To know Him is revealed by the Son through the Holy Spirit who is Christ in us until Jesus returns again (Matthew 16:13-19).
If you know the Father you will know the Son, and if you know the Son you will know the Father. If you deny the Father you deny the Son. If you deny the Son you deny the Father.
See these references – 1 John 2:22-23; 4:14-15; 5:12-13