By the Word of God
II Peter 3:5
Genesis 1:3 - And God said Let there be light: and there was light.
Genesis 1:6-7 - And God said, Let there be a firmament . . . and it was so.
Genesis 1:9 - And God said, . . . let the dry land appear: and it was so.
Genesis 1:11 - And God said, Let the earth bring forth grass, the herb yielding seed, and the fruit tree . . . and it was so.
Genesis 1:14-15 - And God said, Let there be lights in the firmament . . . and it was so.
God's Word works with the same authority and power when spoken today as it did when God first spoke it. You trust God by trusting His Word.