Jeremiah 30:7

A coming period of time would be the worst "Jacob" (Israel) had ever experienced, or would ever experience. This anticipates the Tribulation, in which Israelites will suffer more greatly than they ever have or ever will (cf. Jeremiah 46:10; Isaiah 2:12-21; Isaiah 13:6; Isaiah 34:1-8; Ezekiel 30:3; Daniel 9:27; Daniel 12:1; Joel 1:15; Joel 2:1-2; Joel 2:11; Amos 5:18-20; Micah 1:2-5; Zephaniah 1:2 to Zephaniah 3:8; Zechariah 14:1-8; Zechariah 14:12-15; Matthew 24-25; Revelation 6-18). Perhaps the Lord referred to His people here as Jacob because the patriarch Jacob experienced many extreme distresses. However, the Israelites would not perish in this distress because the Lord promised them deliverance, both physical and spiritual (cf. Zechariah 12:10 to Zechariah 13:1).