This speaks of the Father's will, not of works. What do we know of the Father's will? Let's look at the Scripture.
"For I have come down from heaven, not to do My own will, but the will of Him who sent Me. This is the will of the Father who sent Me, that of all He has given Me I should lose nothing, but should raise it up at the last day. And this is
the will of Him who sent Me, that everyone who sees the Son and believes in Him may have everlasting life; and I will raise him up at the last day."
So, the will of the Father is that we believe in Jesus and are saved.
Let's take the verses you provide in context and read verse 15.
"And whosoever was not found written in the book of life was cast into the lake of fire."
So, God judges all based upon their works, according to the verses you provided. But, we get to verse 15 and find that if our name is in the Book of Life, it doesn't matter what the judgment was! Praise God that if our name is in the Book of Life we are saved!
The Scripture speaks of reward here. You'll see no argument from me that the saved receive rewards for there works on this earth. Praise God that I'll get to cast my rewards at Jesus' feet one day!
Just a couple of verses prior, we are told how to have eternal life. It's interesting you don't mention that verse.
"Truly, truly, I say to you, whoever hears my word and believes him who sent me has eternal life."
The verse you speak of is talking about the result of our salvation, not a an act that saves us.
"For we are his workmanship, created in Christ Jesus for good works, which God prepared beforehand, that we should walk in them."
If we are saved, our life will produce good works.
You miss the context of this verse. The context is that this verse, and the surrounding verses, are aimed at the Jew that thinks they can work themselves into heaven. These verses point out that in order to work to heaven, you need to be perfect. It's the same lesson that was taught throughout the Old Testament. We can't work ourselves to heaven, because we aren't perfect. That's exactly why God sent His Son for us!
Really? You need to study up on what the judgement seat of Christ is.