Mt 7: 21. 24-27
“Not everyone who says to me, ‘Lord, Lord,’ will enter the kingdom of heaven, but only the one who does the will of my Father in heaven.
“Everyone who listens to these words of mine and acts on them will be like a wise man who built his house on rock.
The rain fell, the floods came, and the winds blew and buffeted the house. But it did not collapse; it had been set solidly on rock.
And everyone who listens to these words of mine but does not act on them will be like a fool who built his house on sand.
The rain fell, the floods came, and the winds blew and buffeted the house. And it collapsed and was completely ruined.”
Source: New American Bible
Catechism of the Catholic Church
1970 The Law of the Gospel requires us to make the decisive choice between “the two ways” and to put into practice the words of the Lord. It is summed up in the Golden Rule, “Whatever you wish that men would do to you, do so to them; this is the law and the prophets.”
The entire Law of the Gospel is contained in the “new commandment” of Jesus, to love one another as he has loved us.