They studied scripture

Pr 15:28 The heart of the righteous studieth to answer: but the mouth of the wicked poureth out evil things.

Ec 12:12 And further, by these, my son, be admonished: of making many books there is no end; and much study is a weariness of the flesh.

2Ti 2:15 Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth.

Ps 77:6 I call to remembrance my song in the night: I commune with mine own heart: and my spirit made diligent search.

Ec 1:13 And I gave my heart to seek and search out by wisdom concerning all [things] that are done under heaven: this sore travail hath God given to the sons of man to be exercised therewith.

Jer 29:13 And ye shall seek me, and find [me], when ye shall search for me with all your heart.

Joh 5:39 Search the scriptures; for in them ye think ye have eternal life: and they are they which testify of me.