Chapter Thalamocœle to That of T by Webster's Dictionary (1913 Edition)

(c) To introduce a purpose; — usually followed by may, or might, and frequently preceded by so, in order, to the end, etc.

These things I say, that ye might be saved.

John v. 34.

To the end that he may prolong his days.

Deut. xvii. 20.

(d) To introduce a consequence, result, or effect; — usually preceded by so or such, sometimes by that.

The birds their notes renew, and bleating herds
Attest their joy, that hill and valley rings.

Milton.

He gazed so long
That both his eyes were dazzled.

Tennyson.

(e) To introduce a clause denoting time; — equivalent to in which time, at which time, when.

So wept Duessa until eventide,
That shining lamps in Jove's high course were lit.

Spenser.

Is not this the day
That Hermia should give answer of her choice?

Shak.

(f) In an elliptical sentence to introduce a dependent sentence expressing a wish, or a cause of surprise, indignation, or the like.

Ha, cousin Silence, that thou hadst seen that that this knight and I have seen!

Shak.

O God, that right should thus overcome might!

Shak.

That was formerly added to other conjunctions or to adverbs to make them emphatic.

To try if that our own be ours or no.

Shak.

That is sometimes used to connect a clause with a preceding conjunction on which it depends.

When he had carried Rome and that we looked
For no less spoil than glory.

Shak.

5. As adverb: To such a degree; so; as, he was that frightened he could say nothing. [Archaic or in illiteral use.]

All that, everything of that kind; all that sort.

With singing, laughing, ogling, and all that.

Pope.

The rank is but the guinea's stamp,
The man's the gowd [gold] for a'that.

Burns.

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For that. See under For, prep. — In that. See under In, prep.