God's Word says you can't have faith without works. You cannot have either without the other, otherwise they are dead. When we walk in obedience to God it involves work. Whatever he has designed for each of us to do. Most of the time the things He asks us to do requires a great deal of faith, other times not as much, but with everything we do for Him, faith is needed. As a child of God, you cannot live with one and not the other unless you simply choose to be an unhappy Christian.
God's Word says our salvation is free. Just as with faith being dead without works and also works without faith, salvation would not be free without God's grace. We cannot do anything to deserve His grace and salvation. He loves us so much that He gives it to us without charge.