Is God has beginning?

Question: If there is only one God, and the only one God is the Father who is the Father of Christ and of His followers, and the God of Christ and His followers, then there is no God besides Him, nor there was formed before Him nor there will be after Him, and that there's no other God like Him; isn't God has beginning?

Answer: It was said that from everlasting to everlasting, You are God, it's clear that God has no beginning.

2 Before the mountains were brought forth,
Or ever You had formed the earth and the world,
Even from everlasting to everlasting, You are God.

Psalms 90:2, NKJV