It is the usual faith versus faith and good works, grace and justification question then?
From Scripture supporting that good works as well as faith is required for our entry into heaven is the following. St James writes:
"Take the case, my brothers of someone who has never done a single good act but claims that he has faith. Will that faith save him? If one of the brothers or one of the sisters is in need of clothes and has not enough food to live on, and one of you says to them, ‘I wish you well; keep yourself warm and eat plenty’, without giving them these bare necessities of llife, then what good is that?: if good works do not go with it, it is quite dead.
This is the way to talk to people of that kind:'You say you have faith and I have good deeds; I will prove to you that I have faith by showing you my good deeds–now you prove to me that you have faith without any good deeds to show.
You believe in one God–that is creditable enough, but the demons have the same belief, and they tremble with fear. Do realise, you senseless man, that faith without works is useless. You surely know that Abraham our Father was justified by his deed, because he offered Isaac on the altar? There you see it; faith and good deeds were working together; his faith became perfect by what he did. This is what scripture really means when it says: Abraham put his faith in God, and this was counted as making him justified; and that is why he was called the friend of God. You see now that it is by doing something good, and not only by believing, that a man is justified." [James 2: 14-24]
“It is not those who call me ‘Lord, Lord’ who will enter the kingdom of heaven, but the person who does the will of my father in heaven.” [Matthew 7:21]
“Why do you call me, ‘Lord, Lord,’ but not do what I command? I will show you what someone is like who comes to me, listens to my words, and acts on them.
That one is like a person building a house, who dug deeply and laid the foundation on rock; when the flood came, the river burst against that house but could not shake it because it had been well built. But the one who listens and does not act is like a person who built a house on the ground without a foundation. When the river burst against it, it collapsed at once and was completely destroyed.” [Luke 6:45-49]
“Do not be deceived; God is not mocked, for whatever a man sows, that he will also reap. For he who sows to his own flesh will from the flesh reap corruption; but he who sows to the Spirit will from the Spirit reap eternal life. And let us not grow weary in well-doing, for in due season we shall reap, if we do not lose heart.” [Galations 6:7-9]