Psalm 90:2
(English Standard Version)
https://www.biblegateway.com/passage/?search=Psalm%2090%3A2&version=ESV

Memory Verse Taken from:
Awana Truth & Training
https://www.awana.org/us-curriculum/elementary/tt/

Book 1: Grace in Action
Unit 1.5 God is Eternal

Before the mountains were brought forth,
or ever you had formed the earth and the world,
from everlasting to everlasting you are God.