Confession in deeds, not words
The preacher has just quoted Isaiah on lip-service and now urges the congregation to confess Christ through actions, not by calling him Lord alone.
So let us not merely call him Lord, for that will not save us.
He himself says, "Not everyone who says to me, 'Lord, Lord,' will be saved, but only the one who does righteousness."
Therefore, brothers, let us confess him in our deeds: by loving one another, by not committing adultery, by not speaking evil of one another, by not being jealous, but by being self-controlled, merciful, and good. We ought also to suffer with one another and not love money. It is by these deeds that we confess him, and not by their opposites.
And we must not fear human beings more than we fear God.
For this reason, when you do these things, the Lord said: "If you are gathered close to me in my bosom and do not keep my commandments, I will cast you away and say to you, 'Go away from me; I do not know where you come from, you workers of lawlessness.'"
Greek
Μὴ μόνον οὖν αὐτὸν καλῶμεν κύριον: οὐ γὰρ τοῦτο σώσει ἡμᾶς.
λέγει γάρ: Οὐ πᾶς ὁ λέγων μοι: Κύριε, κύριε, σωθήσεται, ἀλλ’ ὁ ποιῶν τὴν δικαιοσύνην.
ὥστε οὖν, ἀδελφοί, ἐν τοῖς ἔργοις αὐτὸν ὁμολογῶμεν, ἐν τῷ ἀγαπᾶν ἑαυτούς, ἐν τῷ μὴ μοιχᾶσθαι μηδὲ καταλαλεῖν ἀλλήλων μηδὲ ζηλοῦν, ἀλλ’ ἐγκρατεῖς εἶναι, ἐλεήμονας, ἀγαθούς: καὶ συμπάσχειν ἀλλήλοις ὀφείλομεν, καὶ μὴ φιλαργυρεῖν. ἐν τούτοις τοῖς ἔργοις ὁμολογῶμεν αὐτὸν καὶ μὴ ἐν τοῖς ἐναντίοις:
καὶ οὐ δεῖ ἡμᾶς φοβεῖσθαι τοὺς ἀνθρώπους μᾶλλον, ἀλλὰ τὸν θεόν.
διὰ τοῦτο, ταῦτα ὑμῶν πρασσόντων, εἶπεν ὁ κύριος: Ἐὰν ἦτε μετ’ ἐμοῦ συνηγμένοι ἐν τῷ κόλπῳ μου καὶ μὴ ποιῆτε τὰς ἐντολάς μου, ἀποβαλῶ ὑμᾶς καὶ ἐρῶ ὑμῖν: Ὑπάγετε ἀπ’ ἐμοῦ, οὐκ οἶδα ὑμᾶς, πόθεν ἐστέ, ἐργάται ἀνομίας.