Dense, multiplied by three layers.

(Wicca) A key tenet of Wicca, stating that the energy a person puts out into the world, whether positive or negative, will return to them multiplied three times.

The threefold death, which is suffered by kings, heroes, and gods, is a reconstructed Proto-Indo-European theme encountered in Indic, Greek, Celtic, and Germanic mythology.

In chess, the threefold repetition rule states that a player may claim a draw if the same position occurs three times during the game.

The threefold office of Jesus Christ is a Christian doctrine based upon the teachings of the Old Testament of which Christians hold different views.

The Buddha identified the threefold training (or simply śikṣā or sikkhā)See the Anguttara Nikaya Book of Threes' (Tikanipata) Monks chapter (Samanavagga).