Again:
The word "refreshed" as already indicated from Exodus [pointing to Genesis], is due to God ceasing to
Speak Creation. For in the Beginning was the Word [even 'Jesus']. In other words He ceased speaking the Word of Creation at the end of the 6th Day, and from forming anything further with his hands.
No, God did not become tired. He did however Stop Creating, by His Word. Thus "rested", and was "refreshed".
Isaiah 40:28 KJB - Hast thou not known? hast thou not heard, that the everlasting God, the LORD, the Creator of the ends of the earth, fainteth not, neither is weary? there is no searching of his understanding.
He did however ceased from speaking, and saying, "Let there be...", thus pausing in 'breath' as you might say.
Genesis 1:1 KJB - In the beginning God created the heaven and the earth.
Genesis 1:2 KJB - And the earth was without form, and void; and darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters.
Genesis 1:3 KJB - And God said, Let ...
Genesis 1:6 KJB - And God said, Let ...
Genesis 1:7 KJB - And God made ...
Genesis 1:9 KJB - And God said, Let ...
Genesis 1:11 KJB - And God said, Let ...
Genesis 1:14 KJB - And God said, Let ...
Genesis 1:16 KJB - And God made ...
Genesis 1:20 KJB - And God said, Let ...
Genesis 1:21 KJB - And God created ...
Genesis 1:24 KJB - And God said, Let ...
Genesis 1:25 KJB - And God made ...
Genesis 1:26 KJB - And God said, Let ...
Genesis 1:27 KJB - So God created ...
Genesis 1:29 KJB - And God said, Behold ...
Psalms 8:3 KJB - When I consider thy heavens, the work of thy fingers, the moon and the stars, which thou hast ordained;
Psalms 33:6 KJB - By the word of the LORD were the heavens made; and all the host of them by the breath of his mouth.
Psalms 33:9 KJB - For he spake, and it was done; he commanded, and it stood fast.
Job 38:4-7 KJB - [4] Where wast thou when I laid the foundations of the earth? declare, if thou hast understanding. [5] Who hath laid the measures thereof, if thou knowest? or who hath stretched the line upon it? [6] Whereupon are the foundations thereof fastened? or who laid the corner stone thereof; [7] When the morning stars sang together, and all the sons of God shouted for joy?
God was "finished" speaking Creation. It is a "memorial" [pointing to the past perfect Earth without sin, because He is without sin], see Exodus 20:8-11. Then it is also a "memorial" [pointing to the past resting in it of Jesus in the grave for our salvation, because He is without sin, and took upon Himself our sins, and paid the penalty for sin]. In the New Heavens and New Earth, is will again be a "memorial" [pointing to the past act of the finishing the plan of Redemption]. It is the "perpetual [eternal] sign" of perfection and completion, by Faith in the Creator and Redeemer. Those who knowingly separate themselves from this "sign", state that they did not believe that Jesus can bring them to perfect love [John 14:15; Exodus 20:6; Deuteronomy 6:5; Leviticus 19:17-18 KJB].
The Sabbath commandment is eternal Light and Spiritual, never temporary Shadow, never Carnal.
Jesus is the word of God. Therefore, in his death, he too then stopped speaking, entered into the 7th Day the Sabbath of Jesus [the LORD thy God, the Son]., magnifying God's [His Father's] Law above everything, making it honourable. He is both the Just and Justifier ...
Those knowingly transgressing it, willingly "forget" what Jesus paid for their sins [1 john 3:4 KJB], and make excuses ... they choose not to "remember" ...