Revelation 1:8
"I am the Alpha and the Omega" [Note: These are the first and last letters of the Greek alphabet, and indicate "the beginning and the end" See 21:6], says the Lord God Almighty, who is [in the present], and who was [in the past] and who will come [in the future].
1 Timothy 6:15-16
which God will bring about in its [or, "His"] own time. [For] He is the blessed and only Ruler, the King of kings, and the Lord of lords.
Hebrews 1:10-12
And [Psa. 102:25-27 says], "Lord, in the beginning you laid the foundations of the earth, and the heavens are the work of your hand.
Hebrews 13:8
Jesus Christ is the same yesterday and today and forever.