Bible verses about Prayer, Private
(From Torrey's Topical Textbook)

Christ was constant in Matthew 14:23; 26:36,39; Mark 1:35; Luke 9:18,29 Commanded Matthew 6:6 SHOULD BE OFFERED At evening, morning, and noon Psalms 55:17 Day and night Psalms 88:1 Without ceasing I Thessalonians 5:17 Shall be heard Job 22:27 Rewarded openly Matthew 6:6 An evidence of conversion Acts 9:11 Nothing should hinder Daniel 6:10 Exemplified Lot Genesis 19:20 Eliezer Genesis 24:12 Jacob Genesis 32:9-12 Gideon Judges 6:22,36,39 Hannah I Samuel 1:10 David II Samuel 7:18-29 Hezekiah II Kings 20:2 Isaiah II Kings 20:11 Manasseh II Chronicles 33:18,19 Ezra Ezra 9:5,6 Nehemiah Nehemiah 2:4 Jeremiah Jeremiah 32:16-25 Daniel Daniel 9:3,17 Jonah Jonah 2:1 Habakkuk Habakkuk 1:2 Anna Luke 2:37 Paul Acts 9:11 Peter Acts 9:40; 10:9 Cornelius Acts 10:30