Matthew 7:7 & 8
"'Ask and it will be given to you; seek and you will find; knock and the door will be opened to you. For everyone who asks receives; the one who seeks finds; and to the one who knocks, the door will be opened.'" NIV translation
This passage has been wrongly used to give people the impression that God is like some mythical Santa Claus. This is not talking about material things but is, in fact, talking about gaining wisdom and guidance. In the previous verse, Jesus told us that we need to judge who we are sharing the things of God with. As we know, God is the only one that can see into the hearts of men. Because of that fact, we must seek God through prayer in dealing with people that we come into contact with. It is only through Him that we can know who to share the things of God with and who to stay away from.
Does this mean that the gospel of Jesus Christ does not apply to everyone? No, Jesus' blood paid for the sins of all men but not all men will accept the gift. As the Good Shepherd, He knows all of His sheep even before they enter his pen (kingdom). He knows the number of hairs on each head and more importantly He knows what is in their hearts. If we seek His counsel, he will lead us to effectively share the good news with those He has called to hear it.