2 Kings 19:14–19 :: King Hezekiah’s prayer when facing an Assyrian threat

2 Kings 20:3 :: Hezekiah cries to the Lord for mercy towards his terminal illness

Psalm 4:1 :: David asks the Lord to hear him

Psalm 5:3 :: David expects the Lord to answer

Psalm 16:8–9 :: the Lord always by David’s side

Psalm 20:9 :: The Lord will answer

Psalm 27:8 :: Our hearts tell us to pray per David

Psalm 28:6 :: The Lord hears us

Psalm 32:6 :: David says pray at every opportunity

Psalm 39:12 :: Humility in prayer

Psalm 42:9 :: We can express sadness to God and ask Him for understanding

Psalm 54:2 :: David asks God to hear his prayer

Psalm 116:6 :: The Lord heard my prayer

Psalm 141:2–6 :: David prays to live obediently

Isaiah 65:24 :: God speaking about when He hears

Matthew 6:5–15 :: Jesus teaches how to pray

Matthew 21:22 :: Jesus says whatever we ask in prayer and believe we receive

Matthew 26:41 :: Jesus says to pray to avoid falling into temptation

Mark 9:28–29 :: some demons can only be cast out by prayer

Luke 11:1–13 :: Jesus teaches how to pray