Jeremiah 29:9-13

for they prophesy falsely to you in My Name. I have not sent them,’ says the LORD. “For thus says the LORD, ‘When seventy years [of exile] have been completed for Babylon, I will visit (inspect) you and keep My good promise to you, to bring you back to this place. For I know the plans and thoughts that I have for you,’ says the LORD, ‘plans for peace and well-being and not for disaster, to give you a future and a hope. Then you will call on Me and you will come and pray to Me, and I will hear [your voice] and I will listen to you. Then [with a deep longing] you will seek Me and require Me [as a vital necessity] and [you will] find Me when you search for Me with all your heart. [Deut 4:29, 30]