Deuteronomy 4:29

καὶ ζητήσετε ἐκεῖ κύριον τὸν θεὸν ὑμῶν καὶ εὑρήσετε ὅταν ἐκζητήσητε αὐτὸν ἐξ ὅλης τῆς καρδίας σου καὶ ἐξ ὅλης τῆς ψυχῆς σου ἐν τῇ θλίψει σου