Comentario citado sobre Isaías 38:13

Behold even though the author seemingly brought this verse incidentally, come and see, and be amazed, how each verse of this Psalm corresponds one-to-one to each of the points raised by the author:
"L-ord, my heart is not haughty" - to attribute the free will to myself, and to think that my choice is released and depends only on my free will. G-d forbid, I do not hold this arrogant view.
"nor did I lift up my eyes" - i.e. likewise, G-d forbid, for me to lift up my eyes to heaven, and to attribute all of my actions and movements to You, and claim that I am forced in them. Hence, I do not hold of either extreme view.
"Nor do I involve myself in great matters, Or in things too high for me" - Likewise, I know that I am incapable of distinguishing between "necessity and righteousness". These are the words of the author for "one who goes deeply into these subjects will not escape sin and will stumble". He wrote "great matters" corresponding to their magnitude. And "too high for me" corresponding to the concealment of their essence.
"Surely I have stilled and quieted my soul" - i.e. you know and can testify that I indeed conducted myself like this.
"stilled and quieted" - "stilled" means strengthened myself such as "I stilled myself until the morning" (Isaiah 38:13). i.e. I took on myself to hold on to both views - in some of them I strengthened myself and told myself "See now that I, even I, am he, and there is no G-d with me" (Deut. 32:39), for G-d left the free will in my hands. Namely, in matters of [doing good] deeds. As the author wrote earlier "the proper course to follow is to act on the principle of one who believes [that actions are left to a human being's free will, who will therefore be rewarded or punished for them]". While in other matters I "quieted my soul" anticipating G-d's will, namely in matters of Bitachon (trust in G-d). As the author wrote "At the same time, we ought to trust in G-d with the trust of one, fully convinced [that all things and movements, together with their advantageous and injurious results happen by the decree of the Eternal]". This is the meaning of the term "quieted", and this term is used in scripture regarding Bitachon (trust) such as "wait quietly for the salvation of the L-ord" (Eicha 3:26) and "Wait for the L-ord and hope for Him" (Ps. 37:7).
Afterwards, he clarified his words in saying "like a weaned child with his mother", that in being on his mother's breast, he is entirely dependant on her will. But after he has been weaned, his matters are dependant on both his will and her will. Namely, to fulfill his needs, he must engage himself to walk with his feet to the place of food and to take it with his hand and place it in his mouth, and likewise to put on clothing. But he is still lacking the ability to obtain his needs independently . Therefore, he must place his trust in his mother, that she will provide for him. This is the meaning [of the double expression]: "like a weaned child with his mother; my soul is with me like a weaned child". Namely, that for matters of bitachon "like a weaned child with his mother", while for others, namely doing good deeds, "my soul is with me like a weaned child", that it depends on me. The Psalm ends with bitachon (Trust) which is the foundation of Judaism, and its perfection, saying "Let Israel hope in the L-ord from this time forth and forever".

like a lion, my hands and feet As though they are crushed in a lion’s mouth, and so did Hezekiah say (in Isa. 38:13): “like a lion, so it would break all my bones.”