"unto" means to or towards a place or person. It is not used much at all any more. Samuel gave a letter unto his friend. (Nobody, NOBODY speaks like that any more. You will find this kind of English in the Bible, or maybe a translation of the Koran or some hadith... you only need to know it when you read it. I do not think that I have ever used this word in the 50+ years I have been writing and speaking, including university, law practice, and academic writing. Into means "moved to the inside of". It is one of the meanings of "in" here. I put the money into my pocket. I put the money in my pocket. Both mean the same thing. But "into" requires movement to the inside of something. So, I can say "I live in London", but I cannot say "I live into London", because living does not have any movement from one point to another. I can say "I moved into London", because moving includes movement from one place to another. Oddly, you cannot say "I moved in London" and mean "I moved into London". "I moved in London" means I did not leave London, all my moving was done inside the city limits of London. To say "I moved into London", you can say "I moved to London", because "to" here shows destination, like "I went to the store". Why does "I put the money in my pocket" work? I think this is just the verb "put". We do not say "I put the money to my pocket" at all. And when i say "I moved my money in my pocket", I mean that i put my hand into my pocket and moved my money around, without taking the money out of my pocket. "Onto" means "on" plus "to-as-a-destination". Thus, like "into", "onto" means movement from one place to another, this time "on top of", rather than "inside of". "The cat jumped onto the table." The can jumped, and landed on top of the table. "The can jumped into the table." is strange. This means that the cat jumped, and somehow got inside the table. Normally, there is no "inside" to a table. Inside is only for boxes, or bags, or other similar containers. You can say "the cat jumped on the table", meaning either that the cat, while on the table, jumped up and down (cats do not usually act like that, though), or meaning that the can jumped onto the table. Hope this helps, I found it very interesting to answer. I hope you enjoyed it. Best regards, benjamin

"Come unto me all ye that labor and are heavy laden and I will give you rest." old fashioned way to talk. This is a quote from the Bible. Are you going INTO that cave? I saw him drop the nickle into the pond. Please hold onto that bucket.