For everyone who asks receives; those who seek find; and to those who knock, the door will be opened.
NIV
For everyone who asks and keeps on asking receives; and he who seeks and keeps on seeking finds; and to him who knocks and keeps on knocking, the door shall be opened.
AMP
For every one that asketh receiveth; and he that seeketh findeth; and to him that knocketh it shall be opened.
KJV
Like servants waiting for their master to return from a wedding banquet, so that when he comes and knocks they can immediately open the door for him.
NIV
And be like men who are waiting for their master to return home from the marriage feast, so that when he returns from the wedding and comes and knocks, they may open to him immediately.
AMP
And ye yourselves like unto men that wait for their lord, when he will return from the wedding; that when he cometh and knocketh, they may open unto him immediately.
KJV