We can get a clue by the size of the universe. In fact, we have a better grasp of His creation today than they did in Bible times. We have Hubble and other modern-day telescopes. Astronomers today say, "While estimates among different experts vary, an acceptable range is between 100 billion and 200 billion galaxies"
Quoting the wisest man that ever lived, "But who is able to build Him a temple, since heaven and the heaven of heavens cannot contain Him?" 2Chr 2:6
So our God is bigger than the Universe -- that is a humbling picture when our entire planet is the speck, and its inhabitants don't show up on any picture of the universe.
Knowing how great our God is should bring us to our knees before Him, considering that His judgment upon sin is nearer than when we first believed, as is our redemption. For some professing Christians, even some obsessed with watching end times news, that Day will be darkness if they fool themselves by "sinning all the more that grace may abound."
"Alas, you who are longing for the day of the LORD,
For what purpose will the day of the LORD be to you?
It will be darkness and not light;
...Will not the day of the LORD be darkness instead of light,
Even gloom with no brightness in it?" - Amos 5:18,20
In the same context looking at the approach of the Day of the LORD, as God looks down upon all the gatherings today, could this be what He thinks of most of them?
"I hate, I reject your festivals,
Nor do I delight in your solemn assemblies.
Take away from Me the noise of your songs;
I will not even listen to the sound of your harps." - Amos 5:21,23
While we are on our knees today, a wise thing we could ask of God is, "Search me, O God, and know my heart: try me, and know my thoughts: see if there be any wicked way in me, and lead me in the way everlasting." - Ps. 139:23-24
"For though He was crucified in weakness, yet He lives by the power of God. For we also are weak in Him, but we shall live with Him by the power of God toward you. Examine yourselves as to whether you are in the faith. Test yourselves. Do you not know yourselves, that Jesus Christ is in you?—unless indeed you are disqualified. But I trust that you will know that we are not disqualified." - 2 Cor 13:4-6