The Genesis account of creation defines 'creation' perfectly well.
Created
The phrase, 'heaven and the earth', is a Hebrew expression meaning the universe. All we really get from this passage is that the cosmos and earth were created, 'in the beginning'. The perspective of creation week is from the surface of the earth, starting with the Spirit of God hovering over the deep (Gen. 1:2). In the chapter there are three words used for God's work in creation. The first is 'created' ('bara' H1254) a very precise term used only of God.
Create ‘bara’ (H1254) - 'This verb has profound theological significance, since it has only God as it’s subject. Only God can create in the sense implied by bara. The verb expresses the idea of creation out of nothing...(Vines Expository Dictionary)
Made
It is used once to describe the creation of the universe (Gen 1:1), then again to describe the creation of life (Gen 1:21). Finally, in the closing verses, it is used three times for the creation of Adam and Eve (Gen. 1:27). The word translated, 'made' (asah 6213) , has a much broader range of meaning and is used to speak of the creation of the 'firmament' (Gen 1:7), the sun, moon and stars (Gen 1:16), procreation where offspring are made 'after his/their kind' (Gen 1:25) and as a general reference to creation in it's vast array (Gen 1:31).
Made ‘asah’(H6213) "A primitive root; to do or make, in the broadest sense and widest application" (Gen 1:7, Gen 1:16, Gen 1:25, Gen 1:31, Isa. 41:20, 43:7, 45:7, 12, Amos 4:13). (Strong’s Dictionary). "The verb, which occurs over 2600 times in the Old Testament, is used as a synonym for “create” only about 60 times…only when asah is parallel to bara…can we be sure that it implies creation." (Vine 52).
Set
Then there is a third term when God 'set' (nathan H2414), the lights of the sun, moon and stars so that their light is regularly visible from the surface of the earth. In this way the narrative shifts from the very precise word for 'created' to the more general 'made', and then the much broader use of 'set'.
Set (nathan H5414) A primitive root; to give, used with greatest latitude of application (Gen 1:17, Gen 9:13, Gen 18:8, Gen 30:40, Gen 41:41). Elsewhere translated ‘put’, ‘make’, ‘cause’, etc.
The creation account has great significance for the rest of Scripture and how these terms are used in the original and their natural context is essential to really following the text as it was intended to be understood.
God created the universe (Gen. 1:1), life in general (1:21) and man in particular (Gen. 1:27). The term 'bara' is used once for original creation, once for the creation of life and three times for the creation of Adam and Eve. God also created Israel:
Especially striking is the use of bara in Isaiah 40-65. Out of 49 occurrences of the verb in the Old Testament, 20 are in these chapters. Because Isaiah writes prophetically to the Jews in Exile, he speaks of comfort based upon God’s past benefits and blessings to His people. Isaiah especially wants to show that, since Yahweh is the Creator, His is able to deliver His people from captivity. The God of Israel has created all things: “I have made the earth, and created (bara) man upon it: I, even my hands, have stretched out the heavens and all their host have I commanded” (Isa. 45:12). The gods of Babylon are impotent nonentities (Isa. 44:12-20; 46:1-7), and so Israel can expect God to triumph by effecting a new creation, (Isa.: 43:16-21; 65:17-25). (Vine's Complete Expository Dictionary of Old and New Testament Words: By W. E. Vine, Merrill Unger)
The operative word was history, and you are obvious.
Unless of course, they were acquired from God. This account of creation was literally written in stone, it's part of the Ten Commandments and the whole reason for the Sabbath.
For in six days the Lord made heaven and earth, the sea, and all that in them is, and rested the seventh day: wherefore the Lord blessed the sabbath day, and hallowed it. (Gen. 20:11)
God created life which is distinctly different from pagan myths, when tracing things back to original creation they invariably ended up with an elemental deity, earth, air, fire or water. This Babylonian myth indicates two water elementals, fresh and salt water apparently:
When in the height heaven was not named,
And the earth beneath did not yet bear a name,
And the primeval Apsu, who begat them,
And chaos, Tiamut, the mother of them both
Their waters were mingled together,
And no field was formed, no marsh was to be seen;
When of the gods none had been called into being. (Enuma Elish, the Epic of Creation)
Notice at creation the 'gods' didn't even exist.
Obviously the doctrine of creation is the heart of the emphasis but the text also describes creation as being largely a matter of separation. The light from darkness, waters above and below, land and sea. The word (בָּדַל badal H914) is used five times in the creation account then not used again until Exodus, 'The vail shall divide (H914) unto you between the holy place and the most holy' (Exo. 26:33). This is no coincidence, the idea of sanctification is literally the idea of separation, something set aside for God's exclusive use.