As Thou didst send me into the world, I also have sent them into the world. Language changes with time, as you know. When I was little, our teachers used to caution us against saying that things were swell. Shortly after that, swell was replaced by nifty and then by keen. Most of you can remember such changes, because slang is the part of language that changes the fastest.
Religious language is the slowest to change.
The same phenomenon occurred with thou, and its forms thee, thy and thine. Thou wast in the next room. Ye were in the next room. I saw thee in the next room. That is thy room.