ἀθετέω

Mark 6:26 ἀθετῆσαι to refuse

The king was consumed with sorrow, but because of his oaths and his guests, he did not want to refuse her.

Mark 7:9 ἀθετεῖτε do you set aside

He went on to say, “You neatly set aside the command of God to maintain your own tradition.

Here: The word means to treat something as void, the way a legal document is cancelled. The present tense describes something they habitually do. It is stronger than the "leaving behind" (aphentes) of v. 8: they don't just neglect the command, they in effect cancel it.

Luke 7:30 ἠθέτησαν rejected

But the Pharisees and experts in the law rejected God’s purpose for themselves, because they had not been baptized by John.

Luke 10:16 ἀθετῶν ἀθετεῖ· ἀθετῶν ἀθετεῖ rejecting, rejects;, he rejects

Whoever listens to you listens to Me; whoever rejects you rejects Me; and whoever rejects Me rejects the One who sent Me.”

Here: 'The one who sets aside / treats as void.' The word pictures refusing to recognise the messengers' standing and message. It is the word for annulling an agreement or refusing a claim, not mainly a word for feeling hostile.

John 12:48 ἀθετῶν rejecting

There is a judge for the one who rejects Me and does not receive My words: The word that I have spoken will judge him on the last day.

Here: Literally 'to un-place', to treat something as void or of no standing. The present tense describes an ongoing stance: the person who keeps treating Jesus as of no account, not someone who hesitated once.

1 Corinthians 1:19 ἀθετήσω. I will frustrate.

For it is written: “I will destroy the wisdom of the wise; the intelligence of the intelligent I will frustrate.”

Here: 'I will set aside / declare void.' The word was used of annulling a legal arrangement or treating something as invalid. Paul uses it in place of Isaiah's 'I will hide' (Greek Old Testament), which makes the line stronger. God does not only hide this cleverness. He cancels it as invalid.

Galatians 2:21 ἀθετῶ I do set aside

I do not set aside the grace of God. For if righteousness comes through the law, then Christ died for nothing.

Here: Present tense: "I am not annulling." It is a legal word for cancelling a valid arrangement, treating it as void. Paul uses it again in 3:15 of annulling a ratified will or covenant. Treating God's gift as invalid is the charge Paul refuses for himself.

Galatians 3:15 ἀθετεῖ sets aside

Brothers, let me put this in human terms. Even a human covenant, once it is ratified, cannot be canceled or amended.

Here: A legal word for cancelling a document or treating it as void. The present tense states a general rule: 'no one annuls'.

1 Thessalonians 4:8 ἀθετῶν ἀθετεῖ rejecting [this], disregards

Anyone, then, who rejects this command does not reject man but God, the very One who gives you His Holy Spirit.

Here: 'The one who sets aside.' Present tense, so it describes someone who keeps treating the instruction as void. No object is stated. The context supplies it: the instructions of vv. 2–6, especially the call to sexual holiness.

1 Timothy 5:12 ἠθέτησαν· they have cast off;

and thus will incur judgment because they are setting aside their first faith.

Hebrews 10:28 ἀθετήσας Having set aside

Anyone who rejected the law of Moses died without mercy on the testimony of two or three witnesses.

Here: Literally 'to un-place': to treat something binding as void and break faith with it. The past-tense participle points to a decisive act of repudiation, not an occasional slip. It is the condition the whole sentence hangs on: 'anyone who has done this…'.

Jude 1:8 ἀθετοῦσιν, they set aside,

Yet in the same way these dreamers defile their bodies, reject authority, and slander glorious beings.

Here: To treat something binding as void, as one annuls a will or breaks a treaty. They do not simply disobey. They act as if the Lord's claim on them has been cancelled.