I’d say obedience is the sacrifice God commands. Obedience, after all, is nothing more than consent to living the divine life, which is the state for which God was pleased to create us. How should we please God, except to become all that God, in His great love, intended us to be when we were created? He made us to be saints; how could God be bought off with anything else?
But the gift is not like the transgression. For if by that one person’s transgression the many died, how much more did the grace of God and the gracious gift of the one person Jesus Christ overflow for the many. And the gift is not like the result of the one person’s sinning. For after one sin there was the judgment that brought condemnation; but the gift, after many transgressions, brought acquittal. For if, by the transgression of one person, death came to reign through that one, how much more will those who receive the abundance of grace and of the gift of justification come to reign in life through the one person Jesus Christ. In conclusion, just as through one transgression condemnation came upon all, so through one righteous act acquittal and life came to all. For just as through the disobedience of one person the many were made sinners, so through the obedience of one the many will be made righteous. Rom 5:15-21
and
Do you not know that if you present yourselves to someone as obedient slaves, you are slaves of the one you obey, either of sin, which leads to death, or of obedience, which leads to righteousness? But thanks be to God that, although you were once slaves of sin, you have become obedient from the heart to the pattern of teaching to which you were entrusted. Freed from sin, you have become slaves of righteousness. I am speaking in human terms because of the weakness of your nature. For just as you presented the parts of your bodies as slaves to impurity and to lawlessness for lawlessness, so now present them as slaves to righteousness for sanctification. For when you were slaves of sin, you were free from righteousness. But what profit did you get then from the things of which you are now ashamed? For the end of those things is death. But now that you have been freed from sin and have become slaves of God, the benefit that you have leads to sanctification, and its end is eternal life. For the wages of sin is death, but the gift of God is eternal life in Christ Jesus our Lord. Rom 6:16-23
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They promise them freedom, though they themselves are slaves of corruption, for a person is a slave of whatever overcomes him. For if they, having escaped the defilements of the world through the knowledge of [our] Lord and savior Jesus Christ, again become entangled and overcome by them, their last condition is worse than their first. For it would have been better for them not to have known the way of righteousness than after knowing it to turn back from the holy commandment handed down to them. What is expressed in the true proverb has happened to them, “The dog returns to its own vomit,” and “A bathed sow returns to wallowing in the mire.” 2 Pet 2:19-22