Matthew 16:18-19

16:18 And I tell you that you are Peter, and on this rock I will build my church, and the gates of Hades ¹  will not overpower it. 16:19 I will give you the keys of the kingdom of heaven. Whatever you bind on earth will have been bound in heaven, and whatever you release on earth will have been released in heaven.”

Revelation 1:18

1:18 and the one who lives! I ²  was dead, but look, now I am alive – forever and ever – and I hold the keys of death and of Hades! ³ 

[16:18]  ¹ tn Or “and the power of death” (taking the reference to the gates of Hades as a metonymy).

[1:18]  ² tn Here καί (kai) has not been translated because of differences between Greek and English style.

[1:18]  ³ tn Concerning “Hades” BDAG 19 s.v. ᾅδης 1 and 2 states: “Orig. proper noun, god of the nether world, ‘Hades’, then the nether world, Hades as place of the dead, Ac 2:27, 31 (Ps 15:10; Eccl 9:10; PGM 1, 179; 16, 8; Philo, Mos. 1, 195; Jos., Bell. 1, 596, Ant. 6, 332). Of Jonah’s fish ἐκ τοῦ κατωτάτου ᾅδου. In the depths, contrasted w. heaven ἕως (τοῦ) ᾅδου Mt 11:23; Lk 10:15 (PsSol 15:10; cp.; Is 14:11, 15); ἐν τῷ ᾅδῃ 16:23; ἐν ῝Αιδου ApcPt Rainer. Accessible by gates (but the pl. is also used [e.g. Hom., X., Ael. Aristid. 47, 20 K.=23 p. 450 D.] when only one gate is meant), hence πύλαι ᾅδου (Il. 5, 646; Is 38:10; Wsd 16:13; 3 Macc 5:51; Pss. Sol. 16:2. – Lucian, Menipp. 6 the magicians can open τοῦ ῝Αιδου τὰς πύλας and conduct people in and out safely) Mt 16:18…locked ἔχω τὰς κλεῖς τοῦ θανάτου καὶ τοῦ ᾅδου Rv 1:18 (the genitives are either obj. [Ps.-Apollod. 3, 12, 6, 10 Aeacus, the son of Zeus holds the κλεῖς τοῦ ῝Αιδου; SEG VIII, 574, 3 (III ad) τῷ τὰς κλεῖδας ἔχοντι τῶν καθ᾿ ῝Αιδου (restored)] or possess.; in the latter case death and Hades are personif.; s. 2)…Hades personif.…w. θάνατος (cp. Is 28:15; Job 38:17…) Rv 6:8; 20:13f.”