dat. de ὑμεῖς.

αὐτός, -ή, -ό,
determinative pron., in late Gk. much more freq. than in cl. (WM, 178f.; Jannaris, HGG, §1399).
__1. Emphatic (so always in nom. exc. when preceded by the art., see infr., iii);
__(1) self (ipse), expressing opposition, distinction, exclusion, etc., αὐ. ἐκχυθήσεται, Luk.5:37; αὐ. ἐγινώσκεν, Jhn.2:25; αὐ.ὑμεῖς, Jhn.3:28; καὶ αὐ. ἐγώ, Rom.15:14; αὐ. Ἰησοῦς, Jhn.2:24; αὐ. καὶ οἱ μετ᾽ αὐτοῦ, Mrk.2:25; ὑμεῖς αὐ., Mrk.6:31; esp. (as freq in cl.) αὐ. ὁ, Mat.3:4, Mrk.6:17, Jhn.16:27, 1Th.3:11, al.; in late Gk., sometimes weakened, ἐν αὐτῇ τ. ὥρᾳ, in that hour, Luk.10:21 (M, Pr., 91; MM, see word);
__(2) emphatic, he, she, it (M, Pr., 86; Bl., §48, 1, 2, 7), Mat.1:21, 12:50, Luk.6:35, al.; pointing to some one as master (cl.), Mat.8:24, Mrk.4:38, al.; αὐ., καὶ αὐ. = οὗτος, ὁ δε (BL, §48, 1), Mat.14:2, Mrk.14:15, 44, Luk.1:22, 2:28, al.
__2. In oblique cases (cl.), for the simple pron. of 3rd of person(s), he, she, it, Mat.7:9, 10:12, 26:44, al.; with ptcp. in genitive absol., Mat.9:18, Mrk.13:1, al. (for irreg. constructions, V. Bl., §74, 5); pleonastically after the relative (cf. Heb. אֲשֶׁר לוֹ; WM, 184ff.; Bl., §50, 4; MM, see word), Mrk.7:25, Rev.3:8, 7:2, al.; in constr. ad sensum, without proper subject expressly indicated, Mat.4:23, Act.8:5, 2Co.2:13, al.; genitive αὐτοῦ = ἐκείνου, Rom.11:11, 1Th.2:19, Tit.3:5, Heb.2:4.
__3. ὁ, ἡ, τὸ αὐ., the same: Heb.1:12, 13:8; τὸ αὐ., ποιεῖν, Mat.5:46, 47, al.; φρονεῖν, Rom.12:16, 15:5, Php.2:2, al.; τὰ αὐ., Act.15:27, Rom.2:1, al.; κατὰ τὸ (τὰ) αὐ. (MM, see word), Act.14:1, Luk.6:23, al.; ἐπὶ τὸ αὐ., together (MM, see word), Mat.22:34, Act.1:15, al.; ἓν κ. τὸ αὐ., 1Co.11:5, 12:11; with dative (cl.), 1Co.11:5; with a noun, λόγος, Mrk.14:39; μέτρος, Php.1:30; πνεῦμα, 1Co.12:4.
(AS)