From G1223 and G3563; deep {thought} properly the faculty (mind or its {disposition}) by implication its exercise: - {imagination} {mind} understanding.
Luk 24:32And they said one to another, Did not our heart burn within us, while he talked with us by the way, and while he openedG1272 to us the scriptures?
Act 16:14¶ And a certain woman named Lydia, a seller of purple, of the city of Thyatira, which worshipped God, heard us: whose heart the Lord openedG1272, that she attended unto the things which were spoken of Paul.
Act 17:3OpeningG1272 and alleging, that Christ must needs have suffered, and risen again from the dead; and that this Jesus, whom I preach unto you, is Christ.