Seeking the redemption of sins through the sacrifice of animals had become so common that the purpose for which it was done was lost (the change of heart), for repeatedly sin occurred and so did the sacrifice, however what God desired was not 'sacrifices for sins commited', His main purpose was 'no sin to be commited' and thus He through the cross and by His own sacrifice obtained eternal redemption for us.
"Not with the blood of goats and calves, but with His own blood He entered the Most Holy Place once for all, having obtained eternal redemption." Hebrews 9:12 (NKJV)
Now what has changed by Christ's death on the cross for us? How are we then benefited?
Through His death, Christ has suffered all which we were due to suffer as a result of our sins, now then when one realises the ugliness of his/her sins and desires to get out of the sinful life, he/she can easily enter into the new life of holiness without any condemnation or liability, for Christ has already paid for all our sins and opened a way for us to eternal blessedness.
However two things must for sure happen in our life and in the life of everyone before he/she enters into the blessedness of the new life.
1. to realise the ugliness of his/her sins &
2. a desire to get out from the sinful life.
In the parable of 'the prodigal son' this was the turning point in the life of this run away child...
“But when he came to himself, he said, ‘How many of my father’s hired servants have bread enough and to spare, and I perish with hunger! I will arise and go to my father, and will say to him, “Father, I have sinned against heaven and before you," Luke 15:17-18 (NKJV)
Coming back to his senses and a desire to go back was what was required to start the transition from sinfulness to the blessed new life, the path after was much easy.
and what actually made him to take the decision was the goodness of his father as also is available to us...
" ......the goodness of God leads you to repentance " Romans 2:4 (NKJV)
Our God is good always and when we have realised the ugliness & darkness of sin in the goodness and light of our God and thus desire to receive the new life, God will lovingly welcome us into His blessedness, for the penalty of all the bad we have done has already been paid for and now we can move ahead in His glory forever.
Take pride in this all you who belong to Christ...
"There is therefore now no condemnation to those who are in Christ Jesus, who do not walk according to the flesh, but according to the Spirit." Romans 8:1 (NKJV)
for God in His great mercy has accomplished this for us.