Jeremiah 29:6
Take ye wives, and beget sons and daughters; and take wives for your sons, and give your daughters to husbands, that they may bear sons and daughters; that ye may be increased there, and not diminished.
Cross-reference
In Jeremiah 16:2-4, God forbids Jeremiah from marrying due to impending judgment — contrasting the command here to marry and multiply in exile.
Genesis 1:28 gives the original 'be fruitful and multiply' command — directly echoed here as the exiles are told to multiply in Babylon.
Genesis 9:7 repeats the 'be fruitful and multiply' mandate to Noah — mirrored here for the exiles.
1 Corinthians 7:36-38 presents marriage as optional and suggests remaining unmarried is better — contrasting with the strong command to marry and multiply here.
In Genesis 28:1-4, Isaac sends Jacob away to find a wife and be fruitful — mirroring the call to marry and multiply in exile here.
In 1 Timothy 5:14, Paul similarly instructs younger widows to marry and bear children — a parallel practical command.