1. We are to pray daily, especially in the morning, Ps 5:3; 88:13; 143:8; Isa 33:2
2. We are to pray twice daily, especially in the morning and at night, Ps 88:1
3. We are to pray thrice daily, especially in the morning, afternoon and at night, Ps 55:17; Dan 6:10
4. We are to pray always, at all times, 1Th 5:17
5. We are to engage in all night prayer, Lu 6:12
6. We are to pray in secret, Gen 24:63; Mt 6:6
7. We are to pray in silence, Ps 5:1
8. We are to pray with weeping, Ezra 10:1
9. We are to pray with loud voice, 1Ki 18:27
10. We are to engage in long prayers, Mt 23:14
11. We are to avoid vain repetitions in prayers, Mt 6:7
12. God can give signs to assure that prayers are answered, Gen 24:14
13. God can give double signs to assure that prayers are answered, Jug 6:36-40
14. Sometimes, God requires us to act instead of praying, Ex 14:15
15. Sometimes, God may decide not to answer prayers. Deut 3:23-27
16. We are to pray with boldness, Heb 4:16
a) Abraham prayed with boldness concerning Sodom, Gen 18:23-32
b) Moses prayed with boldness concerning the deliverance of Israel, Ex 33:12,18