The rosh ר symbolizes revelation beyond mere commands, law or words. It contains personality. In the bet ב, the revelation is to man. In the kaf כ, the revelation has become man. And in the tav ת, the revelation has produced a spontaneous response back to God. The name of the letter means ‘destitute’. Christ who is the revelation of the Father, emptied himself to be found in the form of man. 
When Christ had finished his work ם of revelation ר he was exalted ram רם.
The revelation of God ר came quickly retz רץ through the cross ץ. 
When the revelation רב has come to man ב, he contends for the faith rab רב.
The word for descend rad רד contains a hint of the emptying or kenosis of Christ as he became incarnate. It is important to note that he did not become lessor than God in the kenosis, he merely chose not to use the attributes of deity, as mentioned previously.
The word of God in the flesh is the word for evil. Christ was made to be sin for us. 
The revelation ר of the bride ז is something that was kept secret ‘raz’ רז until the cross.
As the ‘bar’ בר, he is the exact representation of the nature of God.
The mountain ‘har’ is where you go when you are drawn ה to the revelation ר.
One who pursues ג the revelation ר is a sojourner ‘ger’ גר.
The bitterness ‘myrrh’ מר of his death comes from מ the revelation ר.
John uses the rosh as “water/word” in “earth” ארץ.
- Php 2:7 But made himself of no reputation, and took upon him the form of a servant, and was made in the likeness of men:
- Isa 58:8 ¶ Then shall thy light break forth as the morning, and thine health shall spring forth speedily: and thy righteousness shall go before thee; the glory of the LORD shall be thy reward.
- 2Co 5:21 For he hath made him [to be] sin for us, who knew no sin; that we might be made the righteousness of God in him.
- Joh 9:5 As long as I am in the world, I am the light of the world.
Ps 119:105 ¶ NUN. Thy word [is] a lamp unto my feet, and a light unto my path.
1Jo 5:8 And there are three that bear witness in earth, the Spirit, and the water, and the blood: and these three agree in one.