Perhaps we need more context to determine what the best answer is for your enquiry but I think your tenken is 天譴. This is literally "heavenly admonition" that is meted out to the humans in response to their sins. My take on this concept, by the way, is very well expressed by Mr. Ambrose Bierce's dictionary (s.v. plague).
Not exactly. Kharma uses the concept of cause and effect, which is similar to the saying "You reap what you sow" and requires no divine intervention. Hence the term kharma is neutral, that is we can have good kharma and bad kharma. Kharma may also follow a being through its many incarnations; that is we can be suffering because of a sin committed in a previous life, or we may be enjoying good fortunes now for the good work done in a previous life.
On the other hand, 天譴 refers to punishment administered by Heaven. It requires the existence of a divine entity which judges the behaviour of all beings. From my understanding, 天譴 would be administered within a lifetime when the sin is committed. The concept of incarnations is not present with 天譴.