Jesus Christ is very direct with His disciples.  He never issues a call that we're incapable of responding to, but the timing of His call always seems too soon to us.  We think we need more--- more time, more money, more preparations, more qualifications, more...

But the Savior is also a saver of time when it involves His purposes.  He won't waste it by calling us into His purpose prematurely or by allowing us to linger beyond the timing He knows is best.

Jack Hayford

The Power and Blessing