preposition
unto
UN-tuh/ˈʌntə/
To someone or something, in old-fashioned or biblical language.
The messenger presents the sealed scroll unto the seated king.

Etymology
The ‘up to’ element reinforces to, marking a destination or limit in space or time. Unto may be a reshaping of until; its surviving use is chiefly formal, archaic, or Biblical.
In context
reference to Matthew 3: 16 and 17 as you recall and Jesus when he was baptized went up straight way out of the water and lo the heavens were opened unto him
More examples
- The king declares, “I grant this land unto you.”
- Her private garden is a world unto itself.
- The preacher urges us to give unto others generously.