What does it mean to 'do well' according to the Bible?

In the biblical context, particularly as illustrated in Genesis 4:7, 'to do well' means to act in accordance with God's standards of holiness and righteousness, which we cannot achieve on our own. Christ exemplifies what it means to do well since He entirely fulfilled the law and satisfied God's perfect standards. In Matt 3:17, the voice from heaven declares, 'This is my beloved Son, in whom I am well pleased.' Thus, it is only through Christ that we can be deemed as having done well; our actions must stem from faith in Him. True obedience and good works are fruits of our standing in Christ, not prerequisites for our acceptance—which reinforces the sovereign grace principle of relying solely on Christ's work.