What does Bible tells us about prayer and its importance?
If my people, which are called by my name, shall humble themselves, and pray, and seek my face, and turn from their wicked ways; then will I hear from heaven, and will forgive their sin, and will heal their land. II Chronicles 7:14
And all things, whatsoever ye shall ask in prayer, believing, ye shall receive. Matthew 21:22
And in the morning, rising up a great while before day, he went out, and departed into a solitary place, and there prayed. Mark 1:35
Therefore I say unto you, What things soever ye desire, when ye pray, believe that ye receive them, and ye shall have them. Mark 11:24
Hitherto have ye asked nothing in my name: ask, and ye shall receive, that your joy may be full. John 16:24
Be careful [anxious] for nothing; but in every thing by prayer and supplication with thanksgiving let your requests be made known unto God. Philippians 4:6
I exhort therefore, that, first of all, supplications, prayers, intercessions, and giving of thanks, be made for all men; For kings, and for all that are in authority; that we may lead a quiet and peaceable life in all godliness and honesty. I Timothy 2:1,2