What Exactly are ‘All Things’?

Christian Scriptures declare that, “With God, ‘All Things’ are Possible (Matthew 19:26);” and “Nothing shall be Impossible with God (Luke 1:37).”

Simultaneously, Romans 8:28 asserts:

And we have known that to those loving God ‘all things’ do work together for good, to those who are called according to purpose.

What then are ‘All Things’?