There’s a scriptural basis for this notion of secrets.
God has secrets (Deuteronomy 29:29, Psalm 25:14, Job 11:6a, Revelations 10:4, 1 Corinthians 2:10)—hidden treasures (Isaiah 45:3, Romans 11:33, Colossians 2:3). We can seek them out (Proverbs 3:32b, Proverbs 8:17, Jeremiah 29:13, Matthew 7:7).
We are hidden in Him (Psalm 17:8, Psalm 31:20, Psalm 27:5, Isaiah 49:2, Colossians 3:3). He delights in the intimacy we share, “You are My private garden, My treasure, My bride, a secluded spring, a hidden fountain” (Song of Solomon 4:12).
Wisdom is hidden (Job 28:20-21).
Manna is (still) hidden away (Revelation 2:17).
His power is hidden (Habakkuk 3:4).
God has had a secret plan since the beginning of time (Romans 16:25b, 1 Corinthians 2:7, 1 Corinthians 12:1, 1 Corinthians 13:2, Ephesians 3:9, Colossians 1:26-27).
There is a secret place of the Most High God (Psalm 91:1).
God says, “I will tell you new things, secrets you have not yet heard,” (Isaiah 48:6b) revealed like a “secret whispered in [your] ear” by God (Job 4:12). Just ask Him (Jeremiah 33:3).
He loves a good secret. In fact, “It is the glory of God to hide things in secret; the glory of kings to seek the matter out” (Proverbs 25:2).
How does it make you feel to know that it is the glory of God to keep secrets? It makes me eager to get on with finding them out.
I picture Him up there excitedly hiding Easter eggs like a child, vibrating with anticipation at which of His children will take the time to seek them out - to know the Lord and discover His secrets.