“Searchings of heart” describes inward hesitation or irresolution. In Deborah’s song, the expression rebukes Reuben because its great purposes did not lead to action; the tribe remained among its flocks instead of participating fully.
The phrase occurs in Judges 5:15-16. It is contrasted with great resolves of heart and is associated with Reuben’s failure to act. The expression may indicate hesitation, or irresolution arising from selfish motives.
The Hebrew imagery treats the heart as the seat of understanding, feeling, and answerability to God. The wording is contrasted with another expression concerning the resolves or acts prescribed by understanding.