2 Chronicles 20:18 - "At once Je·hoshʹa·phat bowed low with his face to the ground, and all Judah and the inhabitants of Jerusalem fell down before Jehovah to worship Jehovah."  (New World Translation 2013 Revised ['Silver Sword'] Edition)

2 Chronicles 20:18 - "At once Je·hoshʹa·phat bowed low with his face to the earth, and all Judah and the inhabitants of Jerusalem themselves fell down before Jehovah to do obeisance to Jehovah" (New World Translation 1984 Edition)

2 Chronicles 20:18 -   "to do obeisance to Jehovah."  (Watchtower Concordance 1973) 

This appears to make VERY clear that Jesus = Jehovah, since both deserve 'obeisance.' The implication is very clear that both MUST deserve 'worship' also. Jesus confirms the fact He was worshipped on earth, since He makes this clear in two verses in the New Testament.

Check out:

Matthew 15:9 - "It is in vain that they keep worshiping me, because they teach commands of men as doctrines.”  (NWT 1984 & 2013 NWT Revised 'Silver Sword')

Mark 7:7 - "It is in vain that they keep worshiping me, because they teach as doctrines commands of men."    (NWT 1984 & 2013 NWT Revised 'Silver Sword')

So, both Jehovah AND Jesus are said to have been BOTH worshipped and shown obeisance - according to the WTS.