Genesis 1:20 - Origin of Life

And God said, Let the waters bring forth abundantly the moving creature that hath life, and fowl that may fly above the earth in the open firmament of heaven.

How manifold are God's works! Earth has been richly supplied with life in abundance. From the great and wide sea, where thing that creep and swim are innumerable (Psalm 104:24-25), to the open firmament, where the tiny insect to the king of birds spread their wings and soar above the earth in the open firmament of heaven. The heavens declare the glory of God; and the firmament proves his handiwork (Psalm 19:1).

Genesis 1:9 - Setting Boundaries

And God said, Let the waters under the heaven be gathered together unto one place, and let the dry land appear: and it was so.

God assigned a boundary upon the face of the waters, low enough to let dry land appear. The oceans were locked into vast reservoirs so the waters would not overstep God's command. The sand along the seashore mark the boundary line that the sea cannot cross, an everlasting barrier (Job 26:10; Psalm 33:7; Proverbs 8:29; Jeremiah 5:22). During the flood, God broke the reservoirs open  (Genesis 7:11); but made an everlasting covenant to never do this again Genesis 9:11).

Genesis 1:6 - When The Skies Were Created

And God said, Let there be a firmament in the midst of the waters, and let it divide the waters from the waters.

Through the power of God's word and wisdom, the skies were spread out to divide the waters from the waters. (Job 37:18; Psalm 33:6; 136:5; Jeremiah 10:12).

Genesis 1:2 - Taking Measure

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.

The earth was barren, with no form of life. There was no sun, moon or stars (Jeremiah 4:23). Then, like a surveyor, God took measure of the waters and heaven; and calculated the amount of dust, mountains and hill necessary to keep everything in balance (Isaiah 40:12).