Let's look at the whole stanza for Beth which contains verse 119:11 (that's 911 forwards and backwards)
(comments in parens after the line)
BETH
9 How can a young Man keep His way pure?
By living according to Your word.
(the Son wanted to remain pure by living according to His Father's Word)
10 With My whole heart I have sought You.
(the Son sought His Father with His whole heart)
Don’t let Me wander from Your commandments.
(the Son depends on His Father to keep Him from wandering from His commandments)
11 I have hidden Your word in My heart,
(The Son hid His Father's word in His heart. He took it to heart)
that I might not sin against You.
(so that He would not sin against His Father)
12 Blessed are You, YHVH.
(the Son praises His Father)
Teach Me Your statutes.
(the Son asks His Father to teach Him His statutes)
13 With My lips,
I have declared all the ordinances of Your mouth.
(the Son taught the people the Father's words and ordinances)
14 I have rejoiced in the way of Your testimonies,
(the Son rejoices in the Father's testimonies recorded in Scripture)
as much as in all riches.
15 I will meditate on Your precepts,
(the Son meditates on His Father's precepts)
and consider Your ways.
(the Son considers His Father's ways which eventually required Him to give His life on the cross to save us)
16 I will delight Myself in Your statutes.
(the Son delights in His Father's will and plans)
I will not forget Your word.
(the Son will be obedient and trusted His Father's word and promise that He would be raised to life again after offering His life to save us, as the word and the law required of Him.)
An amazing Savior and prayer from Him to His Father through that entire stanza that reveals so much. How anyone can refute that the Son is praying these verses is incomprehensible. No one else but Him could pray what He prays here.
Thanks for pointing out 119:11 which is more irrefutable proof it is the Son praying and revealing to us how He accomplished our Salvation by obeying His Father.