an (Greek #302)
a primary particle, denoting a supposition, wish, possibility or uncertainty
KJV usage: (what-, where-, wither-, who-)soever. Usually unexpressed except by the subjunctive or potential mood. Also contracted for 1437.
Pronounce: an
omnuo (Greek #3660)
to swear, i.e. take (or declare on) oath
KJV usage: swear.
Pronounce: om-noo'-o
Origin: but obsolete ὄμω, for which another prolonged form ὀμόω (om-o'-o) is used in certain tenses