If circumcision is a covenant of God, you can outline the benefits of being marked. Do so.
But in any observable benefit that you list, there is a more efficient covenant to subscribe to. Unfortunately for Abraham's sons, they've been enslaved to a discipline they've hated to understand, but loved to have hope in.
The rooster doesn't raise the sun. But, you believe a sign in your flesh can fulfill promises which aren't being kept. And so, you have brothers and sisters who will die according to your belief. Many are dying. And many have died. They all worked to inherit God's land, and as a result of ill perception are no longer able to inherit any of the promises given to Abraham.
Refer to your prophets, Jeremiah and Isaiah.
My comments were exclusively in regards to what Torah says, which is rather easy to look up, but if someone doesn't believe in Torah, then obviously they'll likely have a different conclusion.
But for those who believe in Torah, let me post this:
Exod.2
[24] And God heard their groaning, and God remembered his covenant with Abraham, with Isaac, and with Jacob.
Exod.6
[4] I also established my covenant with them, to give them the land of Canaan, the land in which they dwelt as sojourners.
[5] Moreover I have heard the groaning of the people of Israel whom the Egyptians hold in bondage and I have remembered my covenant.
Exod.19
[5] Now therefore, if you will obey my voice and keep my covenant, you shall be my own possession among all peoples; for all the earth is mine,
Exod.23
[32] You shall make no covenant with them or with their gods.
Exod.24
[7] Then he took the book of the covenant, and read it in the hearing of the people; and they said, "All that the LORD has spoken we will do, and we will be obedient."
[8] And Moses took the blood and threw it upon the people, and said, "Behold the blood of the covenant which the LORD has made with you in accordance with all these words."
Exod.31
[16] Therefore the people of Israel shall keep the sabbath, observing the sabbath throughout their generations, as a perpetual covenant.
Exod.34
[10] And he said, "Behold, I make a covenant. Before all your people I will do marvels, such as have not been wrought in all the earth or in any nation; and all the people among whom you are shall see the work of the LORD; for it is a terrible thing that I will do with you.
[12] Take heed to yourself, lest you make a covenant with the inhabitants of the land whither you go, lest it become a snare in the midst of you.
[15] lest you make a covenant with the inhabitants of the land, and when they play the harlot after their gods and sacrifice to their gods and one invites you, you eat of his sacrifice,
[27] And the LORD said to Moses, "Write these words; in accordance with these words I have made a covenant with you and with Israel."
[28] And he was there with the LORD forty days and forty nights; he neither ate bread nor drank water. And he wrote upon the tables the words of the covenant, the ten commandments.
Lev.2
[13] You shall season all your cereal offerings with salt; you shall not let the salt of the covenant with your God be lacking from your cereal offering; with all your offerings you shall offer salt.
Lev.24
[8] Every sabbath day Aaron shall set it in order before the LORD continually on behalf of the people of Israel as a covenant for ever.
Lev.26
[9] And I will have regard for you and make you fruitful and multiply you, and will confirm my covenant with you.
[15] if you spurn my statutes, and if your soul abhors my ordinances, so that you will not do all my commandments, but break my covenant,
[25] And I will bring a sword upon you, that shall execute vengeance for the covenant; and if you gather within your cities I will send pestilence among you, and you shall be delivered into the hand of the enemy.
[42] then I will remember my covenant with Jacob, and I will remember my covenant with Isaac and my covenant with Abraham, and I will remember the land.
[44] Yet for all that, when they are in the land of their enemies, I will not spurn them, neither will I abhor them so as to destroy them utterly and break my covenant with them; for I am the LORD their God;
[45] but I will for their sake remember the covenant with their forefathers, whom I brought forth out of the land of Egypt in the sight of the nations, that I might be their God: I am the LORD."
Num.10
[33] So they set out from the mount of the LORD three days' journey; and the ark of the covenant of the LORD went before them three days' journey, to seek out a resting place for them.
Num.14
[44] But they presumed to go up to the heights of the hill country, although neither the ark of the covenant of the LORD, nor Moses, departed out of the camp.
Num.18
[19] All the holy offerings which the people of Israel present to the LORD I give to you, and to your sons and daughters with you, as a perpetual due; it is a covenant of salt for ever before the LORD for you and for your offspring with you."
Num.25
[12] Therefore say, `Behold, I give to him my covenant of peace;
[13] and it shall be to him, and to his descendants after him, the covenant of a perpetual priesthood, because he was jealous for his God, and made atonement for the people of Israel.'"
Deut.4
[13] And he declared to you his covenant, which he commanded you to perform, that is, the ten commandments; and he wrote them upon two tables of stone.
[23] Take heed to yourselves, lest you forget the covenant of the LORD your God, which he made with you, and make a graven image in the form of anything which the LORD your God has forbidden you.
[31] for the LORD your God is a merciful God; he will not fail you or destroy you or forget the covenant with your fathers which he swore to them.
Deut.5
[2] The LORD our God made a covenant with us in Horeb.
[3] Not with our fathers did the LORD make this covenant, but with us, who are all of us here alive this day.
Deut.7
[2] and when the LORD your God gives them over to you, and you defeat them; then you must utterly destroy them; you shall make no covenant with them, and show no mercy to them.
[9] Know therefore that the LORD your God is God, the faithful God who keeps covenant and steadfast love with those who love him and keep his commandments, to a thousand generations,
[12] "And because you hearken to these ordinances, and keep and do them, the LORD your God will keep with you the covenant and the steadfast love which he swore to your fathers to keep;
Deut.8
[18] You shall remember the LORD your God, for it is he who gives you power to get wealth; that he may confirm his covenant which he swore to your fathers, as at this day.
Deut.9
[9] When I went up the mountain to receive the tables of stone, the tables of the covenant which the LORD made with you, I remained on the mountain forty days and forty nights; I neither ate bread nor drank water.
[11] And at the end of forty days and forty nights the LORD gave me the two tables of stone, the tables of the covenant.
[15] So I turned and came down from the mountain, and the mountain was burning with fire; and the two tables of the covenant were in my two hands.
Deut.10
[8] At that time the LORD set apart the tribe of Levi to carry the ark of the covenant of the LORD, to stand before the LORD to minister to him and to bless in his name, to this day.
Deut.17
[2] "If there is found among you, within any of your towns which the LORD your God gives you, a man or woman who does what is evil in the sight of the LORD your God, in transgressing his covenant,
Deut.29
[1] These are the words of the covenant which the LORD commanded Moses to make with the people of Israel in the land of Moab, besides the covenant which he had made with them at Horeb.
[9] Therefore be careful to do the words of this covenant, that you may prosper in all that you do.
[12] that you may enter into the sworn covenant of the LORD your God, which the LORD your God makes with you this day;
[14] Nor is it with you only that I make this sworn covenant,
[19] one who, when he hears the words of this sworn covenant, blesses himself in his heart, saying, `I shall be safe, though I walk in the stubbornness of my heart.' This would lead to the sweeping away of moist and dry alike.
[21] And the LORD would single him out from all the tribes of Israel for calamity, in accordance with all the curses of the covenant written in this book of the law.
[25] Then men would say, `It is because they forsook the covenant of the LORD, the God of their fathers, which he made with them when he brought them out of the land of Egypt,
Deut.31
[9] And Moses wrote this law, and gave it to the priests the sons of Levi, who carried the ark of the covenant of the LORD, and to all the elders of Israel.
[16] And the LORD said to Moses, "Behold, you are about to sleep with your fathers; then this people will rise and play the harlot after the strange gods of the land, where they go to be among them, and they will forsake me and break my covenant which I have made with them.
[20] For when I have brought them into the land flowing with milk and honey, which I swore to give to their fathers, and they have eaten and are full and grown fat, they will turn to other gods and serve them, and despise me and break my covenant.
[25] Moses commanded the Levites who carried the ark of the covenant of the LORD,
[26] "Take this book of the law, and put it by the side of the ark of the covenant of the LORD your God, that it may be there for a witness against you.
Deut.33
[9] who said of his father and mother,
`I regard them not';
he disowned his brothers,
and ignored his children.
For they observed thy word,
and kept thy covenant.
continued