3 Grk “ages.” The temporal (ages) came to be used of the spatial (what exists in those time periods). See Heb 1:2 for same usage.
4 Grk “by God’s word.”
5 The Greek phrasing emphasizes this point by negating the opposite: “so that what is seen did not come into being from things that are visible.”

In other versions

By faith we understand that the universe was created by the word of God, so that what is seen was not made out of things that are visible.

By faith we understand that the universe was formed at God’s command, so that what is seen was not made out of what was visible.

By faith we understand that the universe was created by the word of God, so that what is seen was made from things that are not visible.

By faith we understand that the entire universe was formed at God’s command, that what we now see did not come from anything that can be seen.

By faith we understand the worlds were created by the word of God, in order that what is seen did not come into existence from what is visible.

Through faith we understand that the worlds were framed by the word of God, so that things which are seen were not made of things which do appear.

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