last trump

broadly

The moment of God's final judgement on Earth. / (by extension) A time that will never come; forever.

Japanese Meaning

地上における神の最後の審判の瞬間 / （拡張された意味で）決して訪れない時、または永遠

Many preachers warned that when the last trump sounded, every soul would stand before God's throne for final judgment.

多くの説教者は、終末のラッパが鳴るとき、すべての魂が神の御座の前に立ち、最後の審判を受けると警告した。

Sense（1）

The moment of God's final judgement on Earth.

Sense（2）

(by extension) A time that will never come; forever.

We could wait until the last trump and no-one will turn up.

last trumps

（ plural ）