Diagram the sentences:

The knowledge that God is a refuge and a fortress sustains Christian's in times of trouble.

Terry, does Charles plan to give Nancy the money after class?

while you're at it, you can correct your spelling ...

Terry, (noun of address)

does plan (main verb)
Charles (subject)
to give (complementary infinitive)
Nancy (indirect object)
the (article)
money (direct object)
after (preposition)
class (object of preposition)

To diagram the sentences, we need to break them down into their parts of speech and show the relationships between those parts.

1. The knowledge that God is a refuge and a fortress sustains Christian's in times of trouble.

- Subject: The knowledge
- Verb: sustains
- Direct object: Christian's (Note: It seems like there might be a typo or grammar error here. It should either be "Christians" or "Christian's faith" to make the sentence grammatically correct.)
- Adjective clause modifying "knowledge": that God is a refuge and a fortress
- Prepositional phrase: in times of trouble

Diagram:
```
The knowledge

┌───────────┐
sustains Christian's

in times of trouble
├──────────────────────────┐
that God is a refuge and a fortress
```

2. Terry, does Charles plan to give Nancy the money after class?

- Subject: Charles
- Verb: does plan
- Direct object: money
- Indirect object: Nancy
- Adverbial phrase modifying "plan": after class
- Vocative: Terry (Note: "Terry" is directly addressing someone, which is called a vocative. It is not necessary for the main sentence structure but can be included to show its relationship.)

Diagram:
```
┌─── Terry

│ ┌─── Charles
│ │
does plan to give

Nancy the money

after class
```

You cannot show diagramming on Jiskha, but if you go through each sentence and tell me what each word does, that'll be a good start.

I'll start you out on the second sentence (question).

Then use the ideas in some of these websites:
https://www.google.com/search?q=how+to+diagram+sentences&oq=how+to+diagram+sentences&aqs=chrome..69i57.4353j0j4&sourceid=chrome&ie=UTF-8