The Bible says The Lord Jesus prayed immediately (Luke 3.21)after baptized by John unlike others who got baptized getting on to the bank of river Jordan and thereafter for 40 days all in spirit only, as He Himself was carried by the spirit(Luke4.1) There was no necessity for Him to speak in a Tongues publicly. Yet when He had to do a private conversation, rather outcry with His Father publicly, Jesus spoke publicly on the cross in Tongues, 'Eli Eli Lama Sabakthani' which no one around could interpret. And when God the Father had a concealed talk with Jesus publicly, spoke in Tongues (with a thunderous (Psalms 29) voice which no one around could interpret (John 12.28) , ' I have glorified and will still glorify'