Matthew 5:35 NIV

New International Version of

Chemical element (Wikipedia) A chemical element is a chemical substance that cannot be broken down into other substances. The basic particle that constitutes a chemical element is the atom, and each chemical element is distinguished by the number of protons in the nuclei of its atoms, known as its atomic number. For example, oxygen has an atomic number of 8, meaning that each oxygen atom has 8 protons in its nucleus. This is in contrast to chemical compounds and mixtures, which contain atoms with more than one atomic number.

And do not swear by your head, for you cannot make even one hair white or black. Matthew 5:36 NIV

But I tell you, do not swear an oath at all: either by heaven, for it is God’s throne; Matthew 5:34 NIV