Hello Khaleel!
I am impressed by your response, you seem to know more about animal sacrifices than many. Animal sacrifices was a source of food in addition to clothing, but closer study would reveal that the best sacrifices were usually the firstlings of the flocks such as with Abel who offered a better Sacrificial offering(Blood Sacrifice) in contrast to Cain. Abel acknowledged that his sin deserved death and could be covered only by the death of a guiltless sacrifice. His Sacrifice was that of a Lamb which was a firstling and "fat" which aslo implies that Abel gave the best that He had.
Each and every sacrifice that is done on your behalf does not make an atonement of any sort, to sacrifice worldly chores to make provisions to benefit the Growth of the Kingdom of God is indeed a sacrifice but not a Sacrifice that would qualify as an atonement of any such. The atonement has already been accomplished on the Cross when Christ made the Ultimate Sacrifice, There are several reasons as to why Christ referred to Himself as the Only Begotten Son of God. As I stated earlier that the best sacrifices were those of the firstlings or the best that they had to offer. Well my friend God gave the "First and Best" that He had to offer as to Demonstrate His unfathomable Love that He has for this lost and dying world filled with sin.
--> SALVATION AND ETERNAL LIFE
If you accept the atonement by prayer then you my friend have your name written in the Lambs Book of Life and you will live forever in the Kingdom of God. If there are Churches nearby you can fellowship with them and they will help you become aquainted with the Lord and you will soon have a personal Relationship with The Creator who has chosen you before the foundation of this world and your life will soon be filled with Hope and Assurance.
GOD BLESS!