Bible Greek and Hebrew Dictionaries combined for Word Studies
Genesis Chapter 1
thereunto 4334 # proserchomai {pros-er'-khom-ahee}; from 4314 and 2064 (including its alternate); to approach, i.e. (literally) come near, visit, or (figuratively) worship, assent to: -- (as soon as he) come (unto), come {thereunto}, consent, draw near, go (near, to, unto).
whereunto 0499 # antitupon {an-teet'-oo-pon}; neuter of a compound of 473 and 5179; corresponding ["antitype"], i.e. a representative, counterpart: -- (like) figure ({whereunto}).