Lyric discussion by trvl 

Zachee kinda nailed it. Though, I think when he sings "hands in the ground, buried traces of sound scream" he means that Isak killed someone on the field and buried him/her on the spot, perhaps the victim was still alive while being buried. And to make it look like nothing ever happened Isak spreads seeds all over the burial/murder site and then waters the area hoping the seeds will start to grow.

Other than that it's really hard to tell since I'm not a native english speaker. The salt part and the last part are mysteries to me. The barrow can be a "large mound of earth or stones placed over a burial site" or it can be a "pig that has been castrated before reaching sexual maturity" which kinda makes senses since Isak is told to tender the swine.

Maybe someone else with more insight will be able to clarify the whole song.

Well salt is spread on ground to restrict life. "Water to salt" may be his salty tears, and "salt to rain" may be his tears falling on the ground. I have no idea what the last part means though. Also, I love the drumming in this song.

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