Is it possible for God to die? No. He 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. (Psalm 90:2 ESV)
“O my God,” I say, “take me not away in the midst of my days – you whose years endure throughout all generations!” Of old you laid the foundation of the earth, and the heavens are the work of your hands. They will perish, but you will remain; they will all wear out like a garment. You will change them like a robe, and they will pass away, but you are the same, and your years have no end. (Psalm 102:24-27 ESV)
For thus says the One who is high and lifted up, who inhabits eternity, whose name is Holy: “I dwell in the high and holy place, and also with him who is of a contrite and lowly spirit, to revive the spirit of the lowly, and to revive the heart of the contrite. (Isa 57:15 ESV)
Is it possible for God to sin? No. He is righteous.
“The Rock, his work is perfect, for all his ways are justice. A God of faithfulness and without iniquity, just and upright is he. (Deuteronomy 32:4 ESV)
Of a truth, God will not do wickedly, and the Almighty will not pervert justice. (Job 34:12 ESV)
You who are of purer eyes than to see evil and cannot look at wrong, why do you idly look at traitors and remain silent when the wicked swallows up the man more righteous than he? (Habakkuk 1:13 ESV)
For you are not a God who delights in wickedness; evil may not dwell with you. (Psalm 5:4 ESV)
Is there anything that God does not know? No. Everything is known to Him.
Have you not known? Have you not heard? The LORD is the everlasting God, the Creator of the ends of the earth. He does not faint or grow weary; his understanding is unsearchable. (Isaiah 40:28 ESV)
Remember this and stand firm, recall it to mind, you transgressors, remember the former things of old; for I am God, and there is no other; I am God, and there is none like me, declaring the end from the beginning and from ancient times things not yet done, saying, “My counsel shall stand, and I will accomplish all my purpose.” (Isaiah 46:8-10 ESV)
Oh, the depth of the riches and wisdom and knowledge of God! How unsearchable are his judgments and how inscrutable his ways! (Romans 11:33 ESV)
Is there any place that God is not? No. He is everywhere.
But will God indeed dwell on the earth? Behold, heaven and the highest heaven cannot contain you; how much less this house that I have built! (1Kings 8:27 ESV)
Where shall I go from your Spirit? Or where shall I flee from your presence? If I ascend to heaven, you are there! If I make my bed in Sheol, you are there! If I take the wings of the morning and dwell in the uttermost parts of the sea, even there your hand shall lead me, and your right hand shall hold me. If I say, “Surely the darkness shall cover me, and the light about me be night,” even the darkness is not dark to you; the night is bright as the day, for darkness is as light with you. (Psalm 139:7-12 ESV)
Am I a God at hand, declares the LORD, and not a God far away? Can a man hide himself in secret places so that I cannot see him? declares the LORD. Do I not fill heaven and earth? declares the LORD. (Jeremiah 23:23-24 ESV)
Is it possible to see God? No. Man cannot see God and live.
But, he said, you cannot see my face, for man shall not see me and live. (Exo 33:20 ESV)
No man hath seen God at any time; the only begotten Son, which is in the bosom of the Father, he hath declared him. (John 1:18 KJV)
To the King of the ages, immortal, invisible, the only God, be honor and glory forever and ever. Amen. (1 Timothy 1:17 ESV)
Does the Bible ever say that God is three persons? No. God only speaks of Himself as one.
To you it was shown, that you might know that the LORD is God; there is no other besides him. (Deuteronomy 4:35 ESV)
Hear, O Israel: The LORD our God, the LORD is one. (Deuteronomy 6:4 ESV)
Thus says the LORD, the King of Israel and his Redeemer, the LORD of hosts: “I am the first and I am the last; besides me there is no god.” (Isaiah 44:6 ESV)
Jesus speaking to the Father: “And this is eternal life, that they know you the only true God, and Jesus Christ whom you have sent.” (John 17:3 ESV)