None of these statements mean we can't understand once God reveals himself,
I see, so spiritual discernment isn't spiritual? There is no difference between how God reveals Himself to unrepentant sinners and repentant sinners?
and Paul says even nature testifies to God.
Paul spoke of natural theology not in a positive light, but rather in a negative light of condemnation. The testimony of nature does not lead to salvation, nor to choosing Christ.
Do you think God is deliberately hiding himself from sinners? No, we can't disern it on our own, but God is not willing that any perish and he reveals himself to all. Not all receive him.
Yes, the hiddeness of God is true to an extent, to a point. There are many examples in Scripture, many in the Old Testament, but I will quote a few from the New:
Matthew 11:25 At that time Jesus answered and said, “I thank You,
Father, Lord of heaven and earth, that
You have hidden these things from the wise and prudent and have revealed them to babes. (
Luke 10:21)
Matthew 13:44 “Again, the
kingdom of heaven is like treasure hidden in a field, which a man found and hid; and for joy over it he goes and sells all that he has and buys that field.
Luke 18:34 But they understood none of these things;
this saying was hidden from them, and they did not know the things which were spoken.
1 Corinthians 2:7 But we speak the wisdom of God in a mystery,
the hidden wisdom which God ordained before the ages for our glory,
Colossians 1:26 the mystery which has been hidden from ages and from generations, but now has been revealed to His saints.
Colossians 2:3 [Christ] in whom are
hidden all the treasures of wisdom and knowledge.
A few Psalms, just because:
Psalms 10:11 He has said in his heart, “God has forgotten; He hides His face; He will never see.”
Psalms 13:1 HOW long, O LORD? Will You forget me forever? How long will You hide Your face from me?
Psalms 27:9 Do not hide Your face from me; Do not turn Your servant away in anger; You have been my help; Do not leave me nor forsake me, O God of my salvation.
Psalms 44:24 Why do You hide Your face, And forget our affliction and our oppression?
Psalms 51:9 Hide Your face from my sins, And blot out all my iniquities.
Psalms 69:17 And do not hide Your face from Your servant, For I am in trouble; Hear me speedily.
Psalms 88:14 LORD, why do You cast off my soul? Why do You hide Your face from me?
Psalms 102:2 Do not hide Your face from me in the day of my trouble; Incline Your ear to me; In the day that I call, answer me speedily.
Psalms 104:29 You hide Your face, they are troubled; You take away their breath, they die and return to their dust.
Psalms 143:7 Answer me speedily, O LORD; My spirit fails! Do not hide Your face from me, Lest I be like those who go down into the pit.
If David, an anointed by the Spirit, King of Israel, chosen by God, cries these words, how much more true are they of the unregenerate heathen?