Revelation 20:5

20:5 (The rest of the dead did not come to life until the thousand years were finished.) ¹  This is the first resurrection.

Revelation 22:13

22:13 I am the Alpha and the Omega,

the first and the last,

the beginning and the end!) ² 

[20:5]  ¹ sn This statement appears to be a parenthetical comment by the author.

[22:13]  ² sn These lines are parenthetical, forming an aside to the narrative. The speaker here is the Lord Jesus Christ himself rather than the narrator.