In what ways can actions be lies?

Proverbs 10:18Hiding hatred makes you a liar; slandering others makes you a fool.

1 John 1:10If we claim we have not sinned, we are calling God a liar and showing that his word has no place in our hearts.

1 John 2:21, 27So I am writing to you not because you don’t know the truth but because you know the difference between truth and lies. . . . But you have received the Holy Spirit, and he lives within you, so you don’t need anyone to teach you what is true. For the Spirit teaches you everything you need to know, and what he teaches is true—it is not a lie. So just as he has taught you, remain in fellowship with Christ.

1 John 4:20If someone says, “I love God,” but hates a Christian brother or sister, that person is a liar; for if we don’t love people we can see, how can we love God, whom we cannot see?

We lie when we try to deceive God, others, or even ourselves about our sin. Deception needs no words to do its job. Whenever we try to appear like someone we are not, we are lying.