This is some good stuff as well. For me it comes down to the spiritual tug-of-war between pride and humility. The parable of the prodigal son places the two sons at each end of this spectrum. It illustrates God’s character as well the two possible ways in which man can respond; prideful rejection of His grace, or humble repentance of our sin in embracing Christ’s redeeming work on the cross.
We have nothing to offer but to shed our pride, repent of our sin, and accept His grace.