Kalah (כלח) is the Hebrew word most often translated as to finish or complete. It first shows up in Bere’shiyt

Bere’shiyt (Genesis) 2:1Thus the heavens and the earth were finished, and all the host of them.

It's cognate and closest relative is kallah (כלּה), the Hebrew word for bride. These two words are roughly the same for a very thought provoking reason. Man is not finished until he and the woman are one. Things are declared good or tov when they are complete. We are told that it is not good that man should be alone (Bere’shiyt 2:18). In the same way, life as we know it, or the end as some call it, will not come until the Messiah comes to take His bride. The Messiah is not complete without His bride. This is why the new heaven and new earth are directly connected to the bride, the Lamb's wife. (Hitgalut (Revelation) 21:1,10.)

Shalom Alecheim!