I can't agree to the vineyard is the Word K16 at all.
Jesus said He is the true vine not the true word although He is that.
(Psa 80:14 Return, we beseech thee, O God of hosts: look down from heaven, and behold, and visit this vine)
(Psa 80:15 And the vineyard which thy right hand hath planted, and the branch that thou madest strong for thyself)
The above ties in with "There was a certain householder, which planted a vineyard" (Mat 21:33) as does the following:
(Isa 5:7 For the vineyard of the LORD of hosts is the house of Israel, and the men of Judah his pleasant plant: and he looked for judgment, but behold oppression; for righteousness, but behold a cry)
(Isa 5:5 And now go to; I will tell you what I will do to my vineyard: I will take away the hedge thereof, and it shall be eaten up; and break down the wall thereof, and it shall be trodden down)
(Mat 21:33 . . . . which planted a vineyard, and hedged it round about . . . .)
(Jer 12:10 Many pastors have destroyed my vineyard, they have trodden my portion under foot, they have made my pleasant portion a desolate wilderness)