Jeremiah 29:4–14 (NIV): 4 This is what the LORD Almighty, the God of Israel, says to all those I carried into exile from Jerusalem to Babylon: 5 “Build houses and settle down; plant gardens and eat what they produce. 6 Marry and have sons and daughters; find wives for your sons and give your daughters in marriage, so that they too may have sons and daughters. Increase in number there; do not decrease. 7 Also, seek the peace and prosperity of the city to which I have carried you into exile. Pray to the LORD for it, because if it prospers, you too will prosper.” 8 Yes, this is what the LORD Almighty, the God of Israel, says: “Do not let the prophets and diviners among you deceive you. Do not listen to the dreams you encourage them to have. 9 They are prophesying lies to you in my name. I have not sent them,” declares the LORD.
10 This is what the LORD says: “When seventy years are completed for Babylon, I will come to you and fulfill my good promise to bring you back to this place. 11 For I know the plans I have for you,” declares the LORD, “plans to prosper you and not to harm you, plans to give you hope and a future. 12 Then you will call on me and come and pray to me, and I will listen to you. 13 You will seek me and find me when you seek me with all your heart. 14 I will be found by you,” declares the LORD, “and will bring you back from captivity. I will gather you from all the nations and places where I have banished you,” declares the LORD, “and will bring you back to the place from which I carried you into exile.”

Other references: Philippians 4:11-13; Isaiah 55:6; Psalm 73:28