Jeremiah 31:6

Yes, a time is coming when watchmen ¹  will call out on the mountains of Ephraim, “Come! Let us go to Zion to worship the Lord our God!”’” ² 

2Ch 13:4; 2Ch 30:5-11; Ezr 1:5; Ezr 8:15-20; Isa 2:2-4; Isa 11:11-13; Isa 40:9; Isa 52:7,8; Isa 62:6; Jer 6:17; Jer 50:4,5; Jer 50:19; Eze 3:17; Eze 33:2; Ho 1:11; Ho 9:8; Mic 4:1-3; Zec 8:20-23; Ac 8:5-8

¹ sn Watchmen were stationed at vantage points to pass on warning of coming attack (Jer 6:17; Ezek 33:2, 6) or to spread the news of victory (Isa 52:8). Here reference is made to the watchmen who signaled the special times of the year such as the new moon and festival times when Israel was to go to Jerusalem to worship. Reference is not made to these in the Hebrew Bible but there is a good deal of instruction regarding them in the later Babylonian Talmud.

² sn Not only will Israel and Judah be reunited under one ruler (cf. 23:5-6), but they will share a unified place and practice of worship once again in contrast to Israel using the illicit places of worship, illicit priesthood, and illicit feasts instituted by Jeroboam (1 Kgs 12:26-31) and continued until the downfall of Samaria in 722 b.c.