New American Standard 1977 Luke 16:22
Now it came about that the poor man died and he was carried away by the angels to Abraham’s bosom (εἰς Ἀβραάμ κόλπον).
Abraham's bosom (Ἀβραάμ κόλπον singular) is a technical term that symbolizes a place of comfort, security and rest after one has died and gone to that location.
My translation of Luke 16:23
in Hades where he was in torments, he looked up and saw Abraham afar off, and Lazarus in his bosoms (ἐν αὐτοῦ κόλποις)
Note the contrast between Abraham’s bosom and Hades.
Note also the use of different prepositions. Here it is not a special term. It refers literally to the bosoms of Abraham.
The shift from singular to plural shows the two different meanings:
- Ἀβραάμ κόλπον refers to the place of comfort in the Biblical Sheol as opposed to torments in Hades.
- αὐτοῦ κόλποις refers literally to his chest area between the neck and the abdomen.