Kabbalah zu Schemuel I 1:11

And the boundary of truth and the tradition of the covenant is that one who wants to attain one's desires regarding the matter of the names of the Holy One of Blessing, that a person needs to make efforts with all of their strength in Torah, to attain the kavvanot [directions] of each and every single one of those holy names that are mentioned in the Torah, such as E"hyeh, Y"ah, YHV"H, A"dnay, E"l, E"loha, E"lohim, Sh"aday, Tz"evaot/ And a person should know and understand that each and every one of these names are viewed as keys to each and every single thing that a person needs in every side and issue in the world. And when one meditates on those names, s/he will find that all of Torah and all mitzvot are dependednt on them, and when one knows the kavanah [direction] of each and every single one of those names, one recognizes and knows the greatness of the One Who Spoke And The World Came Into Being, and one will fear and be in awe of Him, and will be silent, and want, and desire to cling to Him from within the knowledge of the names of the Blessed One, and then one will be close to Y"Y, and one's prayer will be received, and regarding this it is written "I will keep him safe, for he knows My name, he calls on Me and I will answer him" (Psalms 91:15-14). The text does not say 'I will keep him safe because he remembered My name', rather, 'he knows My name' - the knowledge is the main part, and after that, 'he calls on Me and I will answer him". That is to say when the person needs something and directs her/his heart with the Name in which that thing is dependent, then "I will answer him." Haven't you seen that at a difficult time Ya'akov remembered E"l Sh"aday and said: "E~l Sh~aday will give you compassion" (Genesis 43:14). And Daniel when he prayed for the Mikdash he said "And turn Your face to your destroyed Mikdash, for the sake of A"donay (Daniel 9:17). And even though our Sages of blessed memory explained in Brachot: "for the sake of Avraham that called You A"don" (Brachot 7b), still we need to be conscious of it. And Chanah, when she prayed that Y"Y would give her a male child, what is written? "Y"Y Tz"vaot, You surely see the despair of Your handmaid" (I Samuel 1:11), and even though they explained in Brachot (see also Brachot 31a-31b) what they explained, still there is a main part and the internal root of the thing, and *I don't come for the drasha [the external part] rather I come for the main part of the thing*. And after seeing that this is the case, we need to pass into your hand the main part and the root so you will lean on it.