What is ~없어서는, how is it used?

Question

This sentence seemes to say the opposite of what it "should" mean.

찬양과 예배의 삶은 신앙인들에게 없어서는 하나님과의 관계이자 생명 그 자체이다

Just to clarify, I'm not confused (hopefully) on these items:

• 찬양과 예배의 삶은 = a life of praising and worshiping
• 신앙인들에게 = to those that have a walk of faith
• 하나님과의 관계이자 생명 = both life and a relationship with God
• 자체이다 = (the very thing) itself

I've heard 없어서는 안돼 like it's not okay for something to be absent, but I'm thrown by the position of 없어서는 in this sentence.

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It seems to say that a life of praise and worship, if absent, are a relationship with God and life itself - which obviously must be wrong.

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When placed into Google translate, it comes out just a little too well. Perhaps the engine either just got lucky, or it didn't process the ~없어서는

Clarification and other examples of 없어서는 would be fruitful.

Answer 1

I'm pretty sure 없어서는 is a typo of 있어서는.

~에(게) 있어서는 is a common idiom meaning "when it comes to ..." or "to ..." as in "그들에게 있어서는 매우 중요한 문제였다 (To them, it was a very important matter)".

Answer 2

I was told it was supposed to have said

찬양과 예배의 삶은 신앙인들에게 없어서는 안되는 하나님과의 관계이자 생명 그 자체이다

Answer 3

있다 verb : be in place or state

1) 니가 여기 있어서는 (=있어선=있으면=머무르면=stay) 안된다. You must leave here

네가 내 곁에 있어서 안심이다 I am safe because you are near to me.

2) 그것은 사회 발달에 있어서 (=발달에 있어=발달에서) 중요하다 It is important at a social development

나에게 있어서 아버지는 중요하다=나에게 아버지는 중요하다 To me, father is important.

@ That is, 1) is natural. But in 2), 에 있어서(=at) can be replaced with 에서. There is some opinion that 에 있어서 in 2) is born when we translate English sentence. Hence they recommend that we would use 에서. But my habit may prefer 에 있어서.