Where is trust mentioned in the Bible first?

Answer 1

The actual word "trust" first appears in the KJV at Judges 9:15 and is used 134 times throughout The Bible.

However, variations of the word appear earlier:

"trusted" first appears at Deuteronomy 32:37

'trustedst" first appears at Deuteronomy 28:52

Later variations are found at:

"trustest" first appears at 2 Kings 18:19

"trusteth" first appears at Job 40:23

"trusting" appears only at Psalm 112:7

"trusty" appears only at Job 12:20

As a general question, then, I would answer that "trust" as an act first appears in Deuteronomy 28:52 and 32:37, which are about misplacing trust in something other than God.

Answer 2

It depends upon the English translation being used. For the New International Version and the New Revised Standard Version, it is Deuteronomy 1:32. It may also be said that both Adam and Eve where asked 'implicitly' to have trust in God in the story of Genesis.