"Even so faith, if it hath not works, is dead, being alone. Yea, a man may say, Thou hast faith, and I have works: shew me thy faith without thy works, and I will shew you my faith by my works. Thou believest there is one God; thou doest well: the devils also believe, and tremble."
James 2: 17-26
The New Testament in its entirety tells us God so loves us that he gave his son as a sacrifice for our sins. Nothing we do in life is worthy of that. All our righteousness is as filthy rags. But we can not come to the Father through any other means other than belief that Jesus is the Son of God(an act or work). We must repent of our sins(a work) confess that he is the Son of God and our savior(a work) and be buried with him in baptism(a symbolic act that every account of conversion includes..."He who believes and is baptized will be saved; but he who does not believe will be condemned.") then we must remain faithful to the best of our ability. The verses you quoted in Ephesians is but one of many things Paul wrote. He also wrote of sins that would cause you to lose your soul. Taken out of context your verses cited, while very true in that we are saved by faith, are part of what Paul says having faith entails. It's not enough to just believe. There will be a Day of Judgement and your life will be judged for how you lived and your sincere efforts to do the right thing. If you promote sin as being ok, that you'll go to heaven anyways, you are distorting, ignoring, disbelieving what Paul and Christ's other chosen apostles wrote to us. The verses you chose, if you choose to only focus on them, are, as I have been saying, cherry picked for the outcome you want. The Scriptures must be taken as a whole.