1 Samuel 1:12
And it came to pass, as she continued praying before the Lord, that Eli marked her mouth.
Cross-reference
1 Thessalonians 5:17
Parallel
In 1 Thessalonians 5:17, the command to pray without ceasing is exemplified by Hannah's persistent silent prayer.
Colossians 4:2
Parallel
In Colossians 4:2, believers are to continue steadfastly in prayer; Hannah's example fits that call.