He completed his work ת
From Sensus Plenior
As the last letter of the alphabet, the tav ת represents the finished work of God. His revelation ר has finished its work with a spontaneous return to him. We love him because he first loved us. [1]
The name of the tav means 'mark'. The mark of God is his finished work in us. [2]
The word for fraud tk תך and the word for flawless tam תם are an interesting contrast. The first is the finished work ת of the Son of God in death ך. It is fraudulent to consider Christ as dead. This is the same teaching as Sibboleth. The second is the finished work ת by the Son obtaining his bride in the flesh, fulfilling the promise of the Father ם.