2 Maccabees 12:45 (WEB)
But if he was looking forward to an honorable memorial of gratitude laid up for those who die in godliness, then the thought was holy and godly. Therefore he made the atoning sacrifice for those who had died, that they might be released from their sin.
Catechism · 1
“…the dead; and 'because it is a holy and a wholesome thought to pray for the dead that they may be loosed from their sins' she offers her suffrages for them."” — Catechism footnote: LG 50; cf. 2 Macc 12:45.
