dhatura said in post 1:
Why do we need to pray?
Regarding why Christians need to pray prayers of petition, that's because of what's said in James 4:2b, Matthew 7:7-11, and Luke 18:1-8.
But prayer per se is more than just asking God for things.
After people become Christians, to help develop and keep up their relationship with God, they should pray to him every day, such as with the Lord's prayer (Matthew 6:9-13), praising and worshipping him (Revelation 4:11), confessing their sins to him (1 John 1:9), asking him for what they need today (Luke 11:3), and thanking him for all that he has given them (Philippians 4:6). And throughout the day, they should immediately bring to him in prayer anything that they become worried about at anytime (Philippians 4:6-7).
When one of Jesus' disciples asked him how to pray, he told all his disciples to pray what believers call the Lord's prayer (Luke 11:1-4, Matthew 6:9-13). So believers should pray the Lord's prayer, every day, and learn to concentrate on everything it says. It's the perfect model prayer, from which any further, more specific prayers can follow. And there's no need to get long-winded or repetitive (Matthew 6:7-13, Ecclesiastes 5:2). It's better to pray a short prayer with faith than a long prayer with doubting (James 1:6-8).
In order for believers' prayers to be heard, and answered, they must not "ask amiss, that they may consume it upon their lusts" (James 4:3). Before believers pray, they must make sure that they've repented from all their sins (Hebrews 10:26-29), and done all that they can to make reparations to and peace with everyone whom they have ever wronged (Matthew 5:23-26, Romans 12:18, Acts 24:16, Hebrews 12:14). And they must make sure that they have completely forgiven everyone who has ever wronged them (Matthew 6:15). And when they pray for something, they must pray for it with an unwavering faith (James 1:6-8) and an unwavering perseverance (Luke 18:1-8). And they must actually be obeying God in their lives (1 John 3:22). And what they ask for must be according to God's will (1 John 5:14). They must be willing to put aside their own will, and seek God's will in all things (Luke 22:42, Matthew 6:10; 2 Corinthians 12:8-10, Deuteronomy 3:25-26).
Also, believers should give thanks (Philippians 4:6-7). And they should pray for the peace of Jerusalem (Psalms 122:6). And they should pray for all those in authority (1 Timothy 2:2). And they should pray that the Lord of the harvest will send forth laborers into his harvest (Matthew 9:38). Believers should also pray that they might be accounted worthy to escape the future tribulation (Luke 21:36), and that their flight (from the future Antichrist) won't be in the winter (Mark 13:18). And believers who have received the gift of tongues should pray for the separate gift of the interpretation of tongues (1 Corinthians 14:13).
dhatura said in post 1:
Christians are very passive, always waiting for God's will and purpose revealed for us and never taking actions, aren't we?
Christians can be very active, once they have prayed and received the knowledge of what God actually wants them to do. But just acting for acting's sake, apart from knowing God's will, can ultimately prove futile (Psalms 127:1, John 15:5b). So why not simply ask God for his wisdom before acting (James 1:5, James 3:13)? When people don't pray, they might just assume, or they might even be completely convinced, that their actions are right, when in fact they aren't (Proverbs 14:12, Proverbs 16:25).