Thanks for your reply. Very well thought out and presented. Some questions:
Isn't all good conscience, the ability to know good, from God?
Doesn't anyone who chooses to do good based on love glorify God?
Are these limited completely to saved Christians?
Doing "good things"? Non-Christians (and Christians for that matter) can do good things but that doesn't earn them any status with God. God shows no partiality and all have sinned.
OTHO, if you means can non-Christians do works that glorify God, sure. Joseph's brothers did a very "evil" thing in selling Joseph into slavery, but God meant it for good. God caused it to happen.
You're equating doing something very good as something that God finds pleasure in and glorifies Him. God glories in His own work, not ours. We take pleasure in His glory and we rejoice in His work.