Before he walks down the mountain, Abraham offers one more prayer. In Targum Pseudo-Jonathan on Genesis 22:14, the Aramaic paraphrase turns the Hebrew's terse place-naming into a full liturgical petition.
Abraham speaks: I pray through the mercies that are before Thee, O Lord, before whom it is manifest that it was not in the depth of my heart to turn away from doing Thy decree with joy. He wants heaven to notice his intent, not just his action. His obedience was not grudging.
Then the petition becomes intergenerational: when the children of Izhak my son shall offer in the hour of affliction, this may be a memorial for them; and Thou mayest hear them and deliver them.
Every future sacrifice on this mountain — every Passover lamb, every Yom Kippur offering, every priestly service in the First Temple and the Second — is to be heard through the merit of what Abraham did here today. The Targum of Pseudo-Jonathan preserves what will become a cornerstone of Jewish liturgy: zechut avot, the merit of the patriarchs, invoked to this day in the Amidah and the Rosh Hashanah service.
The verse ends with the Shekina — the Divine Presence — revealed on that mountain.
The Maggidim took this as a template for prayer. The takeaway: when you do something hard for heaven, ask that your children's future prayers be credited to what you did today. You are praying for generations you will never meet.