thesaurizo is to accumulate or keep something in reserve, whether possessions, provision, wrath, or the present heavens and earth.

The verb most often describes accumulating or setting things aside for future possession or provision, whether treasure, money, or what parents provide for children. It also occurs with what is held in reserve for a future outcome: wrath and the present heavens and earth.

1. Accumulating possessions or provision · dominant

   Present active forms describe setting aside what may prosper in 1 Corinthians 16:2 and the parental provision contrasted with children in 2 Corinthians 12:14. In Matthew 6:19 and Matthew 6:20, the second-person plural forms address storing treasures either on earth or in heaven; Luke 12:21 and James 5:3 likewise place the action in clauses about treasure accumulated for oneself.

   1 Corinthians 16:22 Corinthians 12:14James 5:3Luke 12:21Matthew 6:19Matthew 6:20
2. Keeping something in reserve for an outcome · occasional

   In Romans 2:5, the present active singular form is used in the clause about storing up wrath for the day of wrath. In 2 Peter 3:7, the perfect passive participle describes the present heavens and earth as stored up and kept for fire toward judgment.

   Romans 2:52 Peter 3:7

In the Anselm Project Bible: The APB commonly uses “store up” or “stored up,” while 1 Corinthians 16:2 says “put something aside” and Luke 12:21 says “lays up treasure.” These are verse-level renderings rather than a word-by-word alignment.