Give thanks to the God of heaven, for his steadfast love endures forever. Psalm 136:26
God is Eternal
God's love is as God Himself is - eternal. When we talk about God being eternal, we are talking about something far greater than the simple duration of His existence. When we say that God is eternal, we are saying God is self-existent or aseity. Aseity is the property by which a being exists in and of itself, from itself; it is the quality or state of being self-derived or self-originated. This means that God's being has no beginning, and He is not dependent on anything outside of Himself to exist. With being self-existent, He has the power to simply be, in and of Himself, with no beginning and no end.
The Mind of God
He is, He always has been, and He always will be - God is beyond all time and space, and He's beyond what even the most brilliant minds and wildest imaginations collectively put together in all of eternity could ever even begin to grasp. Oh, the depth of the riches and wisdom and knowledge of God! How unsearchable are his judgments and how inscrutable his ways! For who has known the mind of the Lord, (Romans 11:33-34). There is no way anyone could ever comprehend the incomprehensible, inscrutable, unfathomable mind of God, and even if God gave us an explanation for everything, we simply wouldn't have the mechanism in us to comprehend it in this lifetime.
God is Love
Before God ever created the world He existed. Jesus said to them, “Truly, truly, I say to you, before Abraham was, I am" (John 8:58). What Scripture makes clear is that throughout all of eternity there was already in His nature the attribute of love. Give thanks to the LORD, for he is good. His steadfast love endures forever. (See Psalm 136). God didn't become a God of love, but He has always been a God of love.
God's Son, Jesus Christ is the object of His affection. And we all know who God sent to die for sinners, for rebels, for the ungodly. He sent His beloved, blameless, sinless Son to take all of God's wrath for all the sins ever committed of all the people who would ever come to faith in Christ...all in three hours. That's how much God loves us. For while we were still weak, at the right time Christ died for the ungodly. For one will scarcely die for a righteous person—though perhaps for a good person one would dare even to die—but God shows his love for us in that while we were still sinners, Christ died for us (Romans 5:6-8).
God's love is, God's love has always been, and God's love will always be. For God so loved the world that He gave his only Son, that whoever believes in him should not perish but have eternal life. For God did not send his Son into the world to condemn the world, but in order that the world might be saved through him (John 3:16-17).
Athiest: If God created the universe then who created God?
Christian: If a baker baked a cake then who baked the baker? ;)