Musar su Salmi 44:23

Love God with all your heart and soul, and with all your resources. When you recite the Shema, sincerely intend that, were it to be necessary, you would sacrifice your life and all your assets in order to sanctify His Name; and never do anything to desecrate His Name or degrade His Commandments. By doing this, you fulfill the words of the Singer, “Because, for your sake, we are killed all the time” (Psalms 44:23).

Offering up one’s soul to sanctify the name of Heaven is a great matter in the eyes of the Holy One Blessed is He, especially if one does so while reciting the verse, “Because for Your sake we are killed all day long,” (Tehillim 44:23). Thus it is written in the Zohar (Parashas Vayeira 124b): Rabbi Shalom bar Manyumi said: You will find no righteous man among those engaged in Torah study who does not possess two hundred desirable worlds. This is the meaning of the verse, “And two hundred for those who guard its fruit” (Shir HaShirim 8:12). The same applies to those who give themselves over for the sanctification of the name every day. On account of the verse, “Because for Your sake we are killed all day long,” they inherit two hundred desirable worlds. And when the time comes for a person who offered up his soul for the sanctification of the name to die, the angel appointed over buried bodies knows how to honor his body in the grave in accordance with his deeds. The Zohar explains (Parashas Vayeira 123b) that before a body can be reckoned among those that are to be revived, the soul must return from Gan Eden and present to the angel Dumah the signs given to it by the cherubim indicating that his body was indeed holy.

We have to understand what the Yalkut Shimoni on 22,9 means when he quotes Abraham's prayer as telling Isaac that since he had begun to offer G–d a רביעית of his blood, G–d would find a substitute offering for him in his place. The words used by Abraham are: הואיל והתחלת, "because you have commenced." Abraham knew that up to that point Isaac had submitted not only willingly but gladly. Seeing that Isaac had commenced in the right spirit, Abraham assured him that G–d would assist him to complete the process successfully. This too is the deeper meaning of Psalms 44,23: נחשבנו כצאן טבחה, "We are regarded as sheep to be slaughtered." This means that we deliver our lives up to sanctify the name of G–d, and attach our souls to G–d so that what is left on earth is only the body like that of an animal. That body we abandon to be slaughtered.