To take the first step in; give origin to; start; commence.
To take the first step; start.
To come into existence; originate.
Everything need not begin at Westover all at once. – We Girls: A Home Story by Mrs. A. D. T. Whitney
Well, let me see, how shall I begin? – Philosopher Jack by R.M. Ballantyne
I'll begin with him! – The Danger Mark by Robert W. Chambers