You can include references like 1 John 4:19 or even Eph 2:8-9 on your site. Reftagger automatically tags the reference and creates a tooltip that appears when a reader hovers over it.
the passage on BibleGateway.com as well.
Jeremiah 29:11
Rom 8:28
Prov 3:5-6
1 Corinthians 13:1-13
Save yourself the trouble