From Isaiah 45 (selected verses):
I am the Lord, and there is no other, besides me there is no God; I equip you, though you do not know me, that people may know, from the rising of the sun and from the west, that there is none besides me; I am the Lord, and there is no other. I form light and create darkness, I make well-being and create calamity, I am the Lord, who does all these things.
I made the earth and created man on it, it was my hands that stretched out the heavens, and I commanded all their host.
All of them are put to shame and confounded; the makers of idols go in confusion together. But Israel is saved by the Lord with everlasting salvation; you shall not be put to shame or confounded to all eternity. For thus says the Lord,
who created the heavens (he is God!), who formed the earth and made it (he established it; he did not create it empty, he formed it to be inhabited!): “I am the Lord, and there is no other. I did not speak in secret, in a land of darkness; I did not say to the offspring of Jacob, ‘Seek me in vain.’I the Lord speak the truth; I declare what is right.
“Assemble yourselves and come; draw near together, you survivors of the nations! They have no knowledge who carry about their wooden idols, and keep on praying to a god that cannot save. Declare and present your case; let them take counsel together! Who told this long ago? Who declared it of old? Was it not I, the Lord? And there is no other god besides me, a righteous God and a Savior; there is none besides me. “Turn to me and be saved, all the ends of the earth! For I am God, and there is no other. By myself I have sworn; from my mouth has gone out in righteousness a word that shall not return: ‘To me every knee shall bow, every tongue shall swear allegiance.’
In case you didn’t get it, there is no other God.
Easter is a time to remember this God, not a God we have created in our imagination. It is a time to remember that this God died for us so that we might live for him and with him. It is time to remember and to glorify this God.