Good Works and Imputation

God's people are encouraged and admonished to do good works (Titus 2, I Timothy 5:10, I Timothy 6:17-19), not to obtain eternal life (Titus 3:5), but because they are profitable to others and they show forth our faith in this world (James 2:14-18).

But doesn't the bible teach that we will be judged according to our works? (Revelation 20) Understanding the beauty of imputation (II Corinthians 5:21) by an everlasting covenant (II Samuel 23:5) proves that God's people stand in no danger of condemnation (Romans 8:1).